Home / 20,506.60-28,279.62-14,878.60

Finding the Fourth Proportional to 20,506.60, 28,279.62 and 14,878.60

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Solution

The fourth proportional to 20,506.60, 28,279.62 and 14,878.60 is: 20,518.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.60 : 28,279.62 = 14,878.60 : x
  2. Step 2: Convert to fraction form
    20,506.60/28,279.62 = 14,878.60/x
  3. Step 3: Cross multiply
    20,506.60x = 28,279.62 × 14,878.60
  4. Step 4: Simplify right side
    20,506.60x = 420,761,154.13
  5. Step 5: Solve for x
    x = 420,761,154.13/20,506.60
  6. Step 6: Final answer
    x = 20,518.33

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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.