Home / 21,752.26-29,989.56-15,697.42

Finding the Fourth Proportional to 21,752.26, 29,989.56 and 15,697.42

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Solution

The fourth proportional to 21,752.26, 29,989.56 and 15,697.42 is: 21,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.26 : 29,989.56 = 15,697.42 : x
  2. Step 2: Convert to fraction form
    21,752.26/29,989.56 = 15,697.42/x
  3. Step 3: Cross multiply
    21,752.26x = 29,989.56 × 15,697.42
  4. Step 4: Simplify right side
    21,752.26x = 470,758,718.94
  5. Step 5: Solve for x
    x = 470,758,718.94/21,752.26
  6. Step 6: Final answer
    x = 21,641.83

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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.