Home / 22,127.18-30,505.64-21,439.22

Finding the Fourth Proportional to 22,127.18, 30,505.64 and 21,439.22

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Solution

The fourth proportional to 22,127.18, 30,505.64 and 21,439.22 is: 29,557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,127.18 : 30,505.64 = 21,439.22 : x
  2. Step 2: Convert to fraction form
    22,127.18/30,505.64 = 21,439.22/x
  3. Step 3: Cross multiply
    22,127.18x = 30,505.64 × 21,439.22
  4. Step 4: Simplify right side
    22,127.18x = 654,017,127.20
  5. Step 5: Solve for x
    x = 654,017,127.20/22,127.18
  6. Step 6: Final answer
    x = 29,557.18

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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.