Home / 21,983.87-32,921.11-15,379.13

Finding the Fourth Proportional to 21,983.87, 32,921.11 and 15,379.13

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Solution

The fourth proportional to 21,983.87, 32,921.11 and 15,379.13 is: 23,030.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.87 : 32,921.11 = 15,379.13 : x
  2. Step 2: Convert to fraction form
    21,983.87/32,921.11 = 15,379.13/x
  3. Step 3: Cross multiply
    21,983.87x = 32,921.11 × 15,379.13
  4. Step 4: Simplify right side
    21,983.87x = 506,298,074.29
  5. Step 5: Solve for x
    x = 506,298,074.29/21,983.87
  6. Step 6: Final answer
    x = 23,030.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.