Home / 14,987.13-20,678.10-8,613.39

Finding the Fourth Proportional to 14,987.13, 20,678.10 and 8,613.39

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Solution

The fourth proportional to 14,987.13, 20,678.10 and 8,613.39 is: 11,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.13 : 20,678.10 = 8,613.39 : x
  2. Step 2: Convert to fraction form
    14,987.13/20,678.10 = 8,613.39/x
  3. Step 3: Cross multiply
    14,987.13x = 20,678.10 × 8,613.39
  4. Step 4: Simplify right side
    14,987.13x = 178,108,539.76
  5. Step 5: Solve for x
    x = 178,108,539.76/14,987.13
  6. Step 6: Final answer
    x = 11,884.10

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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.