Home / 21,719.04-29,961.28-15,011.20

Finding the Fourth Proportional to 21,719.04, 29,961.28 and 15,011.20

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Solution

The fourth proportional to 21,719.04, 29,961.28 and 15,011.20 is: 20,707.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.04 : 29,961.28 = 15,011.20 : x
  2. Step 2: Convert to fraction form
    21,719.04/29,961.28 = 15,011.20/x
  3. Step 3: Cross multiply
    21,719.04x = 29,961.28 × 15,011.20
  4. Step 4: Simplify right side
    21,719.04x = 449,754,766.34
  5. Step 5: Solve for x
    x = 449,754,766.34/21,719.04
  6. Step 6: Final answer
    x = 20,707.86

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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.