Home / 12,791,401.56-17,652,365.10-6,990,427.80

Finding the Fourth Proportional to 12,791,401.56, 17,652,365.10 and 6,990,427.80

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Solution

The fourth proportional to 12,791,401.56, 17,652,365.10 and 6,990,427.80 is: 9,646,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791,401.56 : 17,652,365.10 = 6,990,427.80 : x
  2. Step 2: Convert to fraction form
    12,791,401.56/17,652,365.10 = 6,990,427.80/x
  3. Step 3: Cross multiply
    12,791,401.56x = 17,652,365.10 × 6,990,427.80
  4. Step 4: Simplify right side
    12,791,401.56x = 123,397,583,730,789.78
  5. Step 5: Solve for x
    x = 123,397,583,730,789.78/12,791,401.56
  6. Step 6: Final answer
    x = 9,646,916.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.