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Finding the Fourth Proportional to 32,487.90, 48,731.85 and 12,759.90

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Solution

The fourth proportional to 32,487.90, 48,731.85 and 12,759.90 is: 19,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,487.90 : 48,731.85 = 12,759.90 : x
  2. Step 2: Convert to fraction form
    32,487.90/48,731.85 = 12,759.90/x
  3. Step 3: Cross multiply
    32,487.90x = 48,731.85 × 12,759.90
  4. Step 4: Simplify right side
    32,487.90x = 621,813,532.82
  5. Step 5: Solve for x
    x = 621,813,532.82/32,487.90
  6. Step 6: Final answer
    x = 19,139.85

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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.