Home / 16,945.20-23,387.28-9,871.56

Finding the Fourth Proportional to 16,945.20, 23,387.28 and 9,871.56

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Solution

The fourth proportional to 16,945.20, 23,387.28 and 9,871.56 is: 13,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,945.20 : 23,387.28 = 9,871.56 : x
  2. Step 2: Convert to fraction form
    16,945.20/23,387.28 = 9,871.56/x
  3. Step 3: Cross multiply
    16,945.20x = 23,387.28 × 9,871.56
  4. Step 4: Simplify right side
    16,945.20x = 230,868,937.76
  5. Step 5: Solve for x
    x = 230,868,937.76/16,945.20
  6. Step 6: Final answer
    x = 13,624.44

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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.