Home / 20,558.74-28,375.50-13,397.62

Finding the Fourth Proportional to 20,558.74, 28,375.50 and 13,397.62

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Solution

The fourth proportional to 20,558.74, 28,375.50 and 13,397.62 is: 18,491.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.74 : 28,375.50 = 13,397.62 : x
  2. Step 2: Convert to fraction form
    20,558.74/28,375.50 = 13,397.62/x
  3. Step 3: Cross multiply
    20,558.74x = 28,375.50 × 13,397.62
  4. Step 4: Simplify right side
    20,558.74x = 380,164,166.31
  5. Step 5: Solve for x
    x = 380,164,166.31/20,558.74
  6. Step 6: Final answer
    x = 18,491.61

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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.