Home / 28,458.12-39,272.24-15,882.88

Finding the Fourth Proportional to 28,458.12, 39,272.24 and 15,882.88

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Solution

The fourth proportional to 28,458.12, 39,272.24 and 15,882.88 is: 21,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.12 : 39,272.24 = 15,882.88 : x
  2. Step 2: Convert to fraction form
    28,458.12/39,272.24 = 15,882.88/x
  3. Step 3: Cross multiply
    28,458.12x = 39,272.24 × 15,882.88
  4. Step 4: Simplify right side
    28,458.12x = 623,756,275.25
  5. Step 5: Solve for x
    x = 623,756,275.25/28,458.12
  6. Step 6: Final answer
    x = 21,918.39

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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.