Home / 39,225.47-54,132.20-21,321.68

Finding the Fourth Proportional to 39,225.47, 54,132.20 and 21,321.68

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Solution

The fourth proportional to 39,225.47, 54,132.20 and 21,321.68 is: 29,424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.47 : 54,132.20 = 21,321.68 : x
  2. Step 2: Convert to fraction form
    39,225.47/54,132.20 = 21,321.68/x
  3. Step 3: Cross multiply
    39,225.47x = 54,132.20 × 21,321.68
  4. Step 4: Simplify right side
    39,225.47x = 1,154,189,453.28
  5. Step 5: Solve for x
    x = 1,154,189,453.28/39,225.47
  6. Step 6: Final answer
    x = 29,424.49

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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.