Home / 13,187,423.20-19,781,134.80-8,085,589.60

Finding the Fourth Proportional to 13,187,423.20, 19,781,134.80 and 8,085,589.60

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Solution

The fourth proportional to 13,187,423.20, 19,781,134.80 and 8,085,589.60 is: 12,128,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,423.20 : 19,781,134.80 = 8,085,589.60 : x
  2. Step 2: Convert to fraction form
    13,187,423.20/19,781,134.80 = 8,085,589.60/x
  3. Step 3: Cross multiply
    13,187,423.20x = 19,781,134.80 × 8,085,589.60
  4. Step 4: Simplify right side
    13,187,423.20x = 159,942,137,815,078.09
  5. Step 5: Solve for x
    x = 159,942,137,815,078.09/13,187,423.20
  6. Step 6: Final answer
    x = 12,128,384.40

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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.