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Finding the Fourth Proportional to 10,930.10, 15,331.30 and 10,930.10

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Solution

The fourth proportional to 10,930.10, 15,331.30 and 10,930.10 is: 15,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930.10 : 15,331.30 = 10,930.10 : x
  2. Step 2: Convert to fraction form
    10,930.10/15,331.30 = 10,930.10/x
  3. Step 3: Cross multiply
    10,930.10x = 15,331.30 × 10,930.10
  4. Step 4: Simplify right side
    10,930.10x = 167,572,642.13
  5. Step 5: Solve for x
    x = 167,572,642.13/10,930.10
  6. Step 6: Final answer
    x = 15,331.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.