Home / 15,743.13-21,723.53-10,649.76

Finding the Fourth Proportional to 15,743.13, 21,723.53 and 10,649.76

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Solution

The fourth proportional to 15,743.13, 21,723.53 and 10,649.76 is: 14,695.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.13 : 21,723.53 = 10,649.76 : x
  2. Step 2: Convert to fraction form
    15,743.13/21,723.53 = 10,649.76/x
  3. Step 3: Cross multiply
    15,743.13x = 21,723.53 × 10,649.76
  4. Step 4: Simplify right side
    15,743.13x = 231,350,380.85
  5. Step 5: Solve for x
    x = 231,350,380.85/15,743.13
  6. Step 6: Final answer
    x = 14,695.32

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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.