Home / 20,717.73-28,581.36-14,000.91

Finding the Fourth Proportional to 20,717.73, 28,581.36 and 14,000.91

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Solution

The fourth proportional to 20,717.73, 28,581.36 and 14,000.91 is: 19,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.73 : 28,581.36 = 14,000.91 : x
  2. Step 2: Convert to fraction form
    20,717.73/28,581.36 = 14,000.91/x
  3. Step 3: Cross multiply
    20,717.73x = 28,581.36 × 14,000.91
  4. Step 4: Simplify right side
    20,717.73x = 400,165,049.04
  5. Step 5: Solve for x
    x = 400,165,049.04/20,717.73
  6. Step 6: Final answer
    x = 19,315.10

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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.