Home / 39,192.76-54,086-21,287.80

Finding the Fourth Proportional to 39,192.76, 54,086 and 21,287.80

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Solution

The fourth proportional to 39,192.76, 54,086 and 21,287.80 is: 29,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,192.76 : 54,086 = 21,287.80 : x
  2. Step 2: Convert to fraction form
    39,192.76/54,086 = 21,287.80/x
  3. Step 3: Cross multiply
    39,192.76x = 54,086 × 21,287.80
  4. Step 4: Simplify right side
    39,192.76x = 1,151,371,950.80
  5. Step 5: Solve for x
    x = 1,151,371,950.80/39,192.76
  6. Step 6: Final answer
    x = 29,377.16

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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.