Home / 39,221.36-54,130.20-22,454

Finding the Fourth Proportional to 39,221.36, 54,130.20 and 22,454

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Solution

The fourth proportional to 39,221.36, 54,130.20 and 22,454 is: 30,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.36 : 54,130.20 = 22,454 : x
  2. Step 2: Convert to fraction form
    39,221.36/54,130.20 = 22,454/x
  3. Step 3: Cross multiply
    39,221.36x = 54,130.20 × 22,454
  4. Step 4: Simplify right side
    39,221.36x = 1,215,439,510.80
  5. Step 5: Solve for x
    x = 1,215,439,510.80/39,221.36
  6. Step 6: Final answer
    x = 30,989.22

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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.