Home / 40,136.34-55,387.53-21,986.92

Finding the Fourth Proportional to 40,136.34, 55,387.53 and 21,986.92

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Solution

The fourth proportional to 40,136.34, 55,387.53 and 21,986.92 is: 30,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,136.34 : 55,387.53 = 21,986.92 : x
  2. Step 2: Convert to fraction form
    40,136.34/55,387.53 = 21,986.92/x
  3. Step 3: Cross multiply
    40,136.34x = 55,387.53 × 21,986.92
  4. Step 4: Simplify right side
    40,136.34x = 1,217,801,191.11
  5. Step 5: Solve for x
    x = 1,217,801,191.11/40,136.34
  6. Step 6: Final answer
    x = 30,341.61

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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.