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Finding the Fourth Proportional to 18,893.84, 28,342.20 and 5,565.92

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Solution

The fourth proportional to 18,893.84, 28,342.20 and 5,565.92 is: 8,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.84 : 28,342.20 = 5,565.92 : x
  2. Step 2: Convert to fraction form
    18,893.84/28,342.20 = 5,565.92/x
  3. Step 3: Cross multiply
    18,893.84x = 28,342.20 × 5,565.92
  4. Step 4: Simplify right side
    18,893.84x = 157,750,417.82
  5. Step 5: Solve for x
    x = 157,750,417.82/18,893.84
  6. Step 6: Final answer
    x = 8,349.30

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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.