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Finding the Fourth Proportional to 28,099.97, 42,149.65 and 16,246.20

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Solution

The fourth proportional to 28,099.97, 42,149.65 and 16,246.20 is: 24,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.97 : 42,149.65 = 16,246.20 : x
  2. Step 2: Convert to fraction form
    28,099.97/42,149.65 = 16,246.20/x
  3. Step 3: Cross multiply
    28,099.97x = 42,149.65 × 16,246.20
  4. Step 4: Simplify right side
    28,099.97x = 684,771,643.83
  5. Step 5: Solve for x
    x = 684,771,643.83/28,099.97
  6. Step 6: Final answer
    x = 24,369.12

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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.