Home / 11,983.04-16,545.12-9,998.72

Finding the Fourth Proportional to 11,983.04, 16,545.12 and 9,998.72

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Solution

The fourth proportional to 11,983.04, 16,545.12 and 9,998.72 is: 13,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,983.04 : 16,545.12 = 9,998.72 : x
  2. Step 2: Convert to fraction form
    11,983.04/16,545.12 = 9,998.72/x
  3. Step 3: Cross multiply
    11,983.04x = 16,545.12 × 9,998.72
  4. Step 4: Simplify right side
    11,983.04x = 165,430,022.25
  5. Step 5: Solve for x
    x = 165,430,022.25/11,983.04
  6. Step 6: Final answer
    x = 13,805.35

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Double scale
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Similar ratio
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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.