Home / 20,732.88-28,693.60-20,235.42

Finding the Fourth Proportional to 20,732.88, 28,693.60 and 20,235.42

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Solution

The fourth proportional to 20,732.88, 28,693.60 and 20,235.42 is: 28,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.88 : 28,693.60 = 20,235.42 : x
  2. Step 2: Convert to fraction form
    20,732.88/28,693.60 = 20,235.42/x
  3. Step 3: Cross multiply
    20,732.88x = 28,693.60 × 20,235.42
  4. Step 4: Simplify right side
    20,732.88x = 580,627,047.31
  5. Step 5: Solve for x
    x = 580,627,047.31/20,732.88
  6. Step 6: Final answer
    x = 28,005.13

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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.