Home / 10,312.11-15,431.18-8,930.16

Finding the Fourth Proportional to 10,312.11, 15,431.18 and 8,930.16

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Solution

The fourth proportional to 10,312.11, 15,431.18 and 8,930.16 is: 13,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.11 : 15,431.18 = 8,930.16 : x
  2. Step 2: Convert to fraction form
    10,312.11/15,431.18 = 8,930.16/x
  3. Step 3: Cross multiply
    10,312.11x = 15,431.18 × 8,930.16
  4. Step 4: Simplify right side
    10,312.11x = 137,802,861.74
  5. Step 5: Solve for x
    x = 137,802,861.74/10,312.11
  6. Step 6: Final answer
    x = 13,363.21

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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.