Home / 39,220.88-54,125.22-21,315.87

Finding the Fourth Proportional to 39,220.88, 54,125.22 and 21,315.87

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Solution

The fourth proportional to 39,220.88, 54,125.22 and 21,315.87 is: 29,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,220.88 : 54,125.22 = 21,315.87 : x
  2. Step 2: Convert to fraction form
    39,220.88/54,125.22 = 21,315.87/x
  3. Step 3: Cross multiply
    39,220.88x = 54,125.22 × 21,315.87
  4. Step 4: Simplify right side
    39,220.88x = 1,153,726,153.24
  5. Step 5: Solve for x
    x = 1,153,726,153.24/39,220.88
  6. Step 6: Final answer
    x = 29,416.12

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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.