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Finding the Fourth Proportional to 25,221, 34,812.12 and 15,152.64

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Solution

The fourth proportional to 25,221, 34,812.12 and 15,152.64 is: 20,914.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221 : 34,812.12 = 15,152.64 : x
  2. Step 2: Convert to fraction form
    25,221/34,812.12 = 15,152.64/x
  3. Step 3: Cross multiply
    25,221x = 34,812.12 × 15,152.64
  4. Step 4: Simplify right side
    25,221x = 527,495,522.00
  5. Step 5: Solve for x
    x = 527,495,522.00/25,221
  6. Step 6: Final answer
    x = 20,914.93

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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.