Home / 21,746.76-29,981.97-15,691.92

Finding the Fourth Proportional to 21,746.76, 29,981.97 and 15,691.92

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Solution

The fourth proportional to 21,746.76, 29,981.97 and 15,691.92 is: 21,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746.76 : 29,981.97 = 15,691.92 : x
  2. Step 2: Convert to fraction form
    21,746.76/29,981.97 = 15,691.92/x
  3. Step 3: Cross multiply
    21,746.76x = 29,981.97 × 15,691.92
  4. Step 4: Simplify right side
    21,746.76x = 470,474,674.68
  5. Step 5: Solve for x
    x = 470,474,674.68/21,746.76
  6. Step 6: Final answer
    x = 21,634.24

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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.