Home / 28,327-42,655.78-20,983.54

Finding the Fourth Proportional to 28,327, 42,655.78 and 20,983.54

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Solution

The fourth proportional to 28,327, 42,655.78 and 20,983.54 is: 31,597.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,327 : 42,655.78 = 20,983.54 : x
  2. Step 2: Convert to fraction form
    28,327/42,655.78 = 20,983.54/x
  3. Step 3: Cross multiply
    28,327x = 42,655.78 × 20,983.54
  4. Step 4: Simplify right side
    28,327x = 895,069,265.86
  5. Step 5: Solve for x
    x = 895,069,265.86/28,327
  6. Step 6: Final answer
    x = 31,597.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.