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Finding the Fourth Proportional to 28,614.53, 42,927.18 and 11,518.73

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Solution

The fourth proportional to 28,614.53, 42,927.18 and 11,518.73 is: 17,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.53 : 42,927.18 = 11,518.73 : x
  2. Step 2: Convert to fraction form
    28,614.53/42,927.18 = 11,518.73/x
  3. Step 3: Cross multiply
    28,614.53x = 42,927.18 × 11,518.73
  4. Step 4: Simplify right side
    28,614.53x = 494,466,323.85
  5. Step 5: Solve for x
    x = 494,466,323.85/28,614.53
  6. Step 6: Final answer
    x = 17,280.25

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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.