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Finding the Fourth Proportional to 25,612.88, 38,425.79 and 7,144.88

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Solution

The fourth proportional to 25,612.88, 38,425.79 and 7,144.88 is: 10,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,612.88 : 38,425.79 = 7,144.88 : x
  2. Step 2: Convert to fraction form
    25,612.88/38,425.79 = 7,144.88/x
  3. Step 3: Cross multiply
    25,612.88x = 38,425.79 × 7,144.88
  4. Step 4: Simplify right side
    25,612.88x = 274,547,484.19
  5. Step 5: Solve for x
    x = 274,547,484.19/25,612.88
  6. Step 6: Final answer
    x = 10,719.12

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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.