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Finding the Fourth Proportional to 25,691.79, 38,539.58 and 10,899.03

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Solution

The fourth proportional to 25,691.79, 38,539.58 and 10,899.03 is: 16,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.79 : 38,539.58 = 10,899.03 : x
  2. Step 2: Convert to fraction form
    25,691.79/38,539.58 = 10,899.03/x
  3. Step 3: Cross multiply
    25,691.79x = 38,539.58 × 10,899.03
  4. Step 4: Simplify right side
    25,691.79x = 420,043,984.11
  5. Step 5: Solve for x
    x = 420,043,984.11/25,691.79
  6. Step 6: Final answer
    x = 16,349.35

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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.