Home / 39,220.83-54,125.10-21,315.88

Finding the Fourth Proportional to 39,220.83, 54,125.10 and 21,315.88

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Solution

The fourth proportional to 39,220.83, 54,125.10 and 21,315.88 is: 29,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,220.83 : 54,125.10 = 21,315.88 : x
  2. Step 2: Convert to fraction form
    39,220.83/54,125.10 = 21,315.88/x
  3. Step 3: Cross multiply
    39,220.83x = 54,125.10 × 21,315.88
  4. Step 4: Simplify right side
    39,220.83x = 1,153,724,136.59
  5. Step 5: Solve for x
    x = 1,153,724,136.59/39,220.83
  6. Step 6: Final answer
    x = 29,416.11

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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.