Home / 16,691.09-23,035.79-9,980.42

Finding the Fourth Proportional to 16,691.09, 23,035.79 and 9,980.42

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Solution

The fourth proportional to 16,691.09, 23,035.79 and 9,980.42 is: 13,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,691.09 : 23,035.79 = 9,980.42 : x
  2. Step 2: Convert to fraction form
    16,691.09/23,035.79 = 9,980.42/x
  3. Step 3: Cross multiply
    16,691.09x = 23,035.79 × 9,980.42
  4. Step 4: Simplify right side
    16,691.09x = 229,906,769.00
  5. Step 5: Solve for x
    x = 229,906,769.00/16,691.09
  6. Step 6: Final answer
    x = 13,774.22

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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.