Home / 21,718.20-32,646.90-20,177.40

Finding the Fourth Proportional to 21,718.20, 32,646.90 and 20,177.40

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Solution

The fourth proportional to 21,718.20, 32,646.90 and 20,177.40 is: 30,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.20 : 32,646.90 = 20,177.40 : x
  2. Step 2: Convert to fraction form
    21,718.20/32,646.90 = 20,177.40/x
  3. Step 3: Cross multiply
    21,718.20x = 32,646.90 × 20,177.40
  4. Step 4: Simplify right side
    21,718.20x = 658,729,560.06
  5. Step 5: Solve for x
    x = 658,729,560.06/21,718.20
  6. Step 6: Final answer
    x = 30,330.76

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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.