Home / 16,988.25-23,443.92-9,919.38

Finding the Fourth Proportional to 16,988.25, 23,443.92 and 9,919.38

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Solution

The fourth proportional to 16,988.25, 23,443.92 and 9,919.38 is: 13,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.25 : 23,443.92 = 9,919.38 : x
  2. Step 2: Convert to fraction form
    16,988.25/23,443.92 = 9,919.38/x
  3. Step 3: Cross multiply
    16,988.25x = 23,443.92 × 9,919.38
  4. Step 4: Simplify right side
    16,988.25x = 232,549,151.17
  5. Step 5: Solve for x
    x = 232,549,151.17/16,988.25
  6. Step 6: Final answer
    x = 13,688.82

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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.