Home / 10,312.11-15,431.22-8,930.19

Finding the Fourth Proportional to 10,312.11, 15,431.22 and 8,930.19

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Solution

The fourth proportional to 10,312.11, 15,431.22 and 8,930.19 is: 13,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.11 : 15,431.22 = 8,930.19 : x
  2. Step 2: Convert to fraction form
    10,312.11/15,431.22 = 8,930.19/x
  3. Step 3: Cross multiply
    10,312.11x = 15,431.22 × 8,930.19
  4. Step 4: Simplify right side
    10,312.11x = 137,803,726.53
  5. Step 5: Solve for x
    x = 137,803,726.53/10,312.11
  6. Step 6: Final answer
    x = 13,363.29

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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.