Home / 21,254.74-29,331.84-11,695.12

Finding the Fourth Proportional to 21,254.74, 29,331.84 and 11,695.12

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Solution

The fourth proportional to 21,254.74, 29,331.84 and 11,695.12 is: 16,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.74 : 29,331.84 = 11,695.12 : x
  2. Step 2: Convert to fraction form
    21,254.74/29,331.84 = 11,695.12/x
  3. Step 3: Cross multiply
    21,254.74x = 29,331.84 × 11,695.12
  4. Step 4: Simplify right side
    21,254.74x = 343,039,388.62
  5. Step 5: Solve for x
    x = 343,039,388.62/21,254.74
  6. Step 6: Final answer
    x = 16,139.43

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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.