Home / 39,223.28-54,128.67-21,318.28

Finding the Fourth Proportional to 39,223.28, 54,128.67 and 21,318.28

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Solution

The fourth proportional to 39,223.28, 54,128.67 and 21,318.28 is: 29,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.28 : 54,128.67 = 21,318.28 : x
  2. Step 2: Convert to fraction form
    39,223.28/54,128.67 = 21,318.28/x
  3. Step 3: Cross multiply
    39,223.28x = 54,128.67 × 21,318.28
  4. Step 4: Simplify right side
    39,223.28x = 1,153,929,881.68
  5. Step 5: Solve for x
    x = 1,153,929,881.68/39,223.28
  6. Step 6: Final answer
    x = 29,419.52

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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.