Home / 13,187,420.70-19,781,131.05-8,085,587.10

Finding the Fourth Proportional to 13,187,420.70, 19,781,131.05 and 8,085,587.10

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Solution

The fourth proportional to 13,187,420.70, 19,781,131.05 and 8,085,587.10 is: 12,128,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,420.70 : 19,781,131.05 = 8,085,587.10 : x
  2. Step 2: Convert to fraction form
    13,187,420.70/19,781,131.05 = 8,085,587.10/x
  3. Step 3: Cross multiply
    13,187,420.70x = 19,781,131.05 × 8,085,587.10
  4. Step 4: Simplify right side
    13,187,420.70x = 159,942,058,041,289.47
  5. Step 5: Solve for x
    x = 159,942,058,041,289.47/13,187,420.70
  6. Step 6: Final answer
    x = 12,128,380.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.