Home / 20,925.74-31,512.35-15,122.90

Finding the Fourth Proportional to 20,925.74, 31,512.35 and 15,122.90

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Solution

The fourth proportional to 20,925.74, 31,512.35 and 15,122.90 is: 22,773.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.74 : 31,512.35 = 15,122.90 : x
  2. Step 2: Convert to fraction form
    20,925.74/31,512.35 = 15,122.90/x
  3. Step 3: Cross multiply
    20,925.74x = 31,512.35 × 15,122.90
  4. Step 4: Simplify right side
    20,925.74x = 476,557,884.64
  5. Step 5: Solve for x
    x = 476,557,884.64/20,925.74
  6. Step 6: Final answer
    x = 22,773.77

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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.