Home / 20,717.83-28,614.36-13,675.69

Finding the Fourth Proportional to 20,717.83, 28,614.36 and 13,675.69

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Solution

The fourth proportional to 20,717.83, 28,614.36 and 13,675.69 is: 18,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.83 : 28,614.36 = 13,675.69 : x
  2. Step 2: Convert to fraction form
    20,717.83/28,614.36 = 13,675.69/x
  3. Step 3: Cross multiply
    20,717.83x = 28,614.36 × 13,675.69
  4. Step 4: Simplify right side
    20,717.83x = 391,321,116.91
  5. Step 5: Solve for x
    x = 391,321,116.91/20,717.83
  6. Step 6: Final answer
    x = 18,888.13

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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.