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Finding the Fourth Proportional to 25,927.20, 38,892.72 and 9,290.40

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Solution

The fourth proportional to 25,927.20, 38,892.72 and 9,290.40 is: 13,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,927.20 : 38,892.72 = 9,290.40 : x
  2. Step 2: Convert to fraction form
    25,927.20/38,892.72 = 9,290.40/x
  3. Step 3: Cross multiply
    25,927.20x = 38,892.72 × 9,290.40
  4. Step 4: Simplify right side
    25,927.20x = 361,328,925.89
  5. Step 5: Solve for x
    x = 361,328,925.89/25,927.20
  6. Step 6: Final answer
    x = 13,936.29

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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.