Home / 39,223.12-54,128.16-21,318.28

Finding the Fourth Proportional to 39,223.12, 54,128.16 and 21,318.28

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Solution

The fourth proportional to 39,223.12, 54,128.16 and 21,318.28 is: 29,419.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.12 : 54,128.16 = 21,318.28 : x
  2. Step 2: Convert to fraction form
    39,223.12/54,128.16 = 21,318.28/x
  3. Step 3: Cross multiply
    39,223.12x = 54,128.16 × 21,318.28
  4. Step 4: Simplify right side
    39,223.12x = 1,153,919,270.76
  5. Step 5: Solve for x
    x = 1,153,919,270.76/39,223.12
  6. Step 6: Final answer
    x = 29,419.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.