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Finding the Fourth Proportional to 42,593.76, 63,838.80 and 19,213.92

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Solution

The fourth proportional to 42,593.76, 63,838.80 and 19,213.92 is: 28,797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,593.76 : 63,838.80 = 19,213.92 : x
  2. Step 2: Convert to fraction form
    42,593.76/63,838.80 = 19,213.92/x
  3. Step 3: Cross multiply
    42,593.76x = 63,838.80 × 19,213.92
  4. Step 4: Simplify right side
    42,593.76x = 1,226,593,596.10
  5. Step 5: Solve for x
    x = 1,226,593,596.10/42,593.76
  6. Step 6: Final answer
    x = 28,797.50

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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.