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Finding the Fourth Proportional to 16,705.52, 23,037.71 and 9,990.08

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Solution

The fourth proportional to 16,705.52, 23,037.71 and 9,990.08 is: 13,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,705.52 : 23,037.71 = 9,990.08 : x
  2. Step 2: Convert to fraction form
    16,705.52/23,037.71 = 9,990.08/x
  3. Step 3: Cross multiply
    16,705.52x = 23,037.71 × 9,990.08
  4. Step 4: Simplify right side
    16,705.52x = 230,148,565.92
  5. Step 5: Solve for x
    x = 230,148,565.92/16,705.52
  6. Step 6: Final answer
    x = 13,776.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.