Home / 20,535.57-28,336.98-15,160.86

Finding the Fourth Proportional to 20,535.57, 28,336.98 and 15,160.86

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Solution

The fourth proportional to 20,535.57, 28,336.98 and 15,160.86 is: 20,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.57 : 28,336.98 = 15,160.86 : x
  2. Step 2: Convert to fraction form
    20,535.57/28,336.98 = 15,160.86/x
  3. Step 3: Cross multiply
    20,535.57x = 28,336.98 × 15,160.86
  4. Step 4: Simplify right side
    20,535.57x = 429,612,986.60
  5. Step 5: Solve for x
    x = 429,612,986.60/20,535.57
  6. Step 6: Final answer
    x = 20,920.43

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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.