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Finding the Fourth Proportional to 14,609.30, 20,139.09 and 10,354.10

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Solution

The fourth proportional to 14,609.30, 20,139.09 and 10,354.10 is: 14,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.30 : 20,139.09 = 10,354.10 : x
  2. Step 2: Convert to fraction form
    14,609.30/20,139.09 = 10,354.10/x
  3. Step 3: Cross multiply
    14,609.30x = 20,139.09 × 10,354.10
  4. Step 4: Simplify right side
    14,609.30x = 208,522,151.77
  5. Step 5: Solve for x
    x = 208,522,151.77/14,609.30
  6. Step 6: Final answer
    x = 14,273.25

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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.