Home / 39,292.53-54,223.64-21,387.48

Finding the Fourth Proportional to 39,292.53, 54,223.64 and 21,387.48

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Solution

The fourth proportional to 39,292.53, 54,223.64 and 21,387.48 is: 29,514.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.53 : 54,223.64 = 21,387.48 : x
  2. Step 2: Convert to fraction form
    39,292.53/54,223.64 = 21,387.48/x
  3. Step 3: Cross multiply
    39,292.53x = 54,223.64 × 21,387.48
  4. Step 4: Simplify right side
    39,292.53x = 1,159,706,989.29
  5. Step 5: Solve for x
    x = 1,159,706,989.29/39,292.53
  6. Step 6: Final answer
    x = 29,514.69

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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.