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Finding the Fourth Proportional to 28,498.98, 42,737.52 and 11,866.86

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Solution

The fourth proportional to 28,498.98, 42,737.52 and 11,866.86 is: 17,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.98 : 42,737.52 = 11,866.86 : x
  2. Step 2: Convert to fraction form
    28,498.98/42,737.52 = 11,866.86/x
  3. Step 3: Cross multiply
    28,498.98x = 42,737.52 × 11,866.86
  4. Step 4: Simplify right side
    28,498.98x = 507,160,166.59
  5. Step 5: Solve for x
    x = 507,160,166.59/28,498.98
  6. Step 6: Final answer
    x = 17,795.73

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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.