Home / 39,360.80-54,316.56-21,455.52

Finding the Fourth Proportional to 39,360.80, 54,316.56 and 21,455.52

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Solution

The fourth proportional to 39,360.80, 54,316.56 and 21,455.52 is: 29,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,360.80 : 54,316.56 = 21,455.52 : x
  2. Step 2: Convert to fraction form
    39,360.80/54,316.56 = 21,455.52/x
  3. Step 3: Cross multiply
    39,360.80x = 54,316.56 × 21,455.52
  4. Step 4: Simplify right side
    39,360.80x = 1,165,390,039.41
  5. Step 5: Solve for x
    x = 1,165,390,039.41/39,360.80
  6. Step 6: Final answer
    x = 29,607.88

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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.