Home / 39,223.60-54,128.58-21,318.61

Finding the Fourth Proportional to 39,223.60, 54,128.58 and 21,318.61

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Solution

The fourth proportional to 39,223.60, 54,128.58 and 21,318.61 is: 29,419.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.60 : 54,128.58 = 21,318.61 : x
  2. Step 2: Convert to fraction form
    39,223.60/54,128.58 = 21,318.61/x
  3. Step 3: Cross multiply
    39,223.60x = 54,128.58 × 21,318.61
  4. Step 4: Simplify right side
    39,223.60x = 1,153,945,871.61
  5. Step 5: Solve for x
    x = 1,153,945,871.61/39,223.60
  6. Step 6: Final answer
    x = 29,419.68

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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.