Home / 28,542.03-39,386.18-15,618.68

Finding the Fourth Proportional to 28,542.03, 39,386.18 and 15,618.68

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Solution

The fourth proportional to 28,542.03, 39,386.18 and 15,618.68 is: 21,552.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.03 : 39,386.18 = 15,618.68 : x
  2. Step 2: Convert to fraction form
    28,542.03/39,386.18 = 15,618.68/x
  3. Step 3: Cross multiply
    28,542.03x = 39,386.18 × 15,618.68
  4. Step 4: Simplify right side
    28,542.03x = 615,160,141.84
  5. Step 5: Solve for x
    x = 615,160,141.84/28,542.03
  6. Step 6: Final answer
    x = 21,552.78

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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.