Home / 15,161.04-20,920.18-8,445.80

Finding the Fourth Proportional to 15,161.04, 20,920.18 and 8,445.80

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Solution

The fourth proportional to 15,161.04, 20,920.18 and 8,445.80 is: 11,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.04 : 20,920.18 = 8,445.80 : x
  2. Step 2: Convert to fraction form
    15,161.04/20,920.18 = 8,445.80/x
  3. Step 3: Cross multiply
    15,161.04x = 20,920.18 × 8,445.80
  4. Step 4: Simplify right side
    15,161.04x = 176,687,656.24
  5. Step 5: Solve for x
    x = 176,687,656.24/15,161.04
  6. Step 6: Final answer
    x = 11,654.06

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Half scale
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Double scale
Find fourth proportional to 15,162.04, 20,921.56 and 8,446.80
Similar ratio
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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.