Home / 21,034.24-29,029.28-15,719.80

Finding the Fourth Proportional to 21,034.24, 29,029.28 and 15,719.80

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Solution

The fourth proportional to 21,034.24, 29,029.28 and 15,719.80 is: 21,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.24 : 29,029.28 = 15,719.80 : x
  2. Step 2: Convert to fraction form
    21,034.24/29,029.28 = 15,719.80/x
  3. Step 3: Cross multiply
    21,034.24x = 29,029.28 × 15,719.80
  4. Step 4: Simplify right side
    21,034.24x = 456,334,475.74
  5. Step 5: Solve for x
    x = 456,334,475.74/21,034.24
  6. Step 6: Final answer
    x = 21,694.84

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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.