Home / 28,270.68-39,013.56-15,695.52

Finding the Fourth Proportional to 28,270.68, 39,013.56 and 15,695.52

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Solution

The fourth proportional to 28,270.68, 39,013.56 and 15,695.52 is: 21,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.68 : 39,013.56 = 15,695.52 : x
  2. Step 2: Convert to fraction form
    28,270.68/39,013.56 = 15,695.52/x
  3. Step 3: Cross multiply
    28,270.68x = 39,013.56 × 15,695.52
  4. Step 4: Simplify right side
    28,270.68x = 612,338,111.25
  5. Step 5: Solve for x
    x = 612,338,111.25/28,270.68
  6. Step 6: Final answer
    x = 21,659.83

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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.