Home / 28,139.97-38,832.89-15,393.04

Finding the Fourth Proportional to 28,139.97, 38,832.89 and 15,393.04

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Solution

The fourth proportional to 28,139.97, 38,832.89 and 15,393.04 is: 21,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.97 : 38,832.89 = 15,393.04 : x
  2. Step 2: Convert to fraction form
    28,139.97/38,832.89 = 15,393.04/x
  3. Step 3: Cross multiply
    28,139.97x = 38,832.89 × 15,393.04
  4. Step 4: Simplify right side
    28,139.97x = 597,756,055.04
  5. Step 5: Solve for x
    x = 597,756,055.04/28,139.97
  6. Step 6: Final answer
    x = 21,242.24

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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.