Home / 20,988.09-28,956.56-14,262.12

Finding the Fourth Proportional to 20,988.09, 28,956.56 and 14,262.12

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Solution

The fourth proportional to 20,988.09, 28,956.56 and 14,262.12 is: 19,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.09 : 28,956.56 = 14,262.12 : x
  2. Step 2: Convert to fraction form
    20,988.09/28,956.56 = 14,262.12/x
  3. Step 3: Cross multiply
    20,988.09x = 28,956.56 × 14,262.12
  4. Step 4: Simplify right side
    20,988.09x = 412,981,862.20
  5. Step 5: Solve for x
    x = 412,981,862.20/20,988.09
  6. Step 6: Final answer
    x = 19,676.96

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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.