Home / 39,339.02-54,287.17-21,434.18

Finding the Fourth Proportional to 39,339.02, 54,287.17 and 21,434.18

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Solution

The fourth proportional to 39,339.02, 54,287.17 and 21,434.18 is: 29,578.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.02 : 54,287.17 = 21,434.18 : x
  2. Step 2: Convert to fraction form
    39,339.02/54,287.17 = 21,434.18/x
  3. Step 3: Cross multiply
    39,339.02x = 54,287.17 × 21,434.18
  4. Step 4: Simplify right side
    39,339.02x = 1,163,600,648.45
  5. Step 5: Solve for x
    x = 1,163,600,648.45/39,339.02
  6. Step 6: Final answer
    x = 29,578.79

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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.