Home / 28,132.60-42,198.90-14,135.80

Finding the Fourth Proportional to 28,132.60, 42,198.90 and 14,135.80

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Solution

The fourth proportional to 28,132.60, 42,198.90 and 14,135.80 is: 21,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.60 : 42,198.90 = 14,135.80 : x
  2. Step 2: Convert to fraction form
    28,132.60/42,198.90 = 14,135.80/x
  3. Step 3: Cross multiply
    28,132.60x = 42,198.90 × 14,135.80
  4. Step 4: Simplify right side
    28,132.60x = 596,515,210.62
  5. Step 5: Solve for x
    x = 596,515,210.62/28,132.60
  6. Step 6: Final answer
    x = 21,203.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.