Home / 21,318.74-29,410.52-20,330.54

Finding the Fourth Proportional to 21,318.74, 29,410.52 and 20,330.54

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Solution

The fourth proportional to 21,318.74, 29,410.52 and 20,330.54 is: 28,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.74 : 29,410.52 = 20,330.54 : x
  2. Step 2: Convert to fraction form
    21,318.74/29,410.52 = 20,330.54/x
  3. Step 3: Cross multiply
    21,318.74x = 29,410.52 × 20,330.54
  4. Step 4: Simplify right side
    21,318.74x = 597,931,753.28
  5. Step 5: Solve for x
    x = 597,931,753.28/21,318.74
  6. Step 6: Final answer
    x = 28,047.24

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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.