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Finding the Fourth Proportional to 25,607.76, 38,432.76 and 19,799.76

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Solution

The fourth proportional to 25,607.76, 38,432.76 and 19,799.76 is: 29,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,607.76 : 38,432.76 = 19,799.76 : x
  2. Step 2: Convert to fraction form
    25,607.76/38,432.76 = 19,799.76/x
  3. Step 3: Cross multiply
    25,607.76x = 38,432.76 × 19,799.76
  4. Step 4: Simplify right side
    25,607.76x = 760,959,424.14
  5. Step 5: Solve for x
    x = 760,959,424.14/25,607.76
  6. Step 6: Final answer
    x = 29,715.97

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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.