Home / 39,968.52-55,159.02-22,978.20

Finding the Fourth Proportional to 39,968.52, 55,159.02 and 22,978.20

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Solution

The fourth proportional to 39,968.52, 55,159.02 and 22,978.20 is: 31,711.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,968.52 : 55,159.02 = 22,978.20 : x
  2. Step 2: Convert to fraction form
    39,968.52/55,159.02 = 22,978.20/x
  3. Step 3: Cross multiply
    39,968.52x = 55,159.02 × 22,978.20
  4. Step 4: Simplify right side
    39,968.52x = 1,267,454,993.36
  5. Step 5: Solve for x
    x = 1,267,454,993.36/39,968.52
  6. Step 6: Final answer
    x = 31,711.33

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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.