Home / 20,435.60-28,204.18-12,482.42

Finding the Fourth Proportional to 20,435.60, 28,204.18 and 12,482.42

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Solution

The fourth proportional to 20,435.60, 28,204.18 and 12,482.42 is: 17,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.60 : 28,204.18 = 12,482.42 : x
  2. Step 2: Convert to fraction form
    20,435.60/28,204.18 = 12,482.42/x
  3. Step 3: Cross multiply
    20,435.60x = 28,204.18 × 12,482.42
  4. Step 4: Simplify right side
    20,435.60x = 352,056,248.29
  5. Step 5: Solve for x
    x = 352,056,248.29/20,435.60
  6. Step 6: Final answer
    x = 17,227.60

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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.