Home / 20,988.91-28,967.46-12,034.66

Finding the Fourth Proportional to 20,988.91, 28,967.46 and 12,034.66

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Solution

The fourth proportional to 20,988.91, 28,967.46 and 12,034.66 is: 16,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.91 : 28,967.46 = 12,034.66 : x
  2. Step 2: Convert to fraction form
    20,988.91/28,967.46 = 12,034.66/x
  3. Step 3: Cross multiply
    20,988.91x = 28,967.46 × 12,034.66
  4. Step 4: Simplify right side
    20,988.91x = 348,613,532.16
  5. Step 5: Solve for x
    x = 348,613,532.16/20,988.91
  6. Step 6: Final answer
    x = 16,609.42

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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.