Home / 20,340.36-28,049.97-15,862.47

Finding the Fourth Proportional to 20,340.36, 28,049.97 and 15,862.47

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Solution

The fourth proportional to 20,340.36, 28,049.97 and 15,862.47 is: 21,874.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.36 : 28,049.97 = 15,862.47 : x
  2. Step 2: Convert to fraction form
    20,340.36/28,049.97 = 15,862.47/x
  3. Step 3: Cross multiply
    20,340.36x = 28,049.97 × 15,862.47
  4. Step 4: Simplify right side
    20,340.36x = 444,941,807.63
  5. Step 5: Solve for x
    x = 444,941,807.63/20,340.36
  6. Step 6: Final answer
    x = 21,874.82

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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.