Home / 28,320.54-39,084.39-15,747.18

Finding the Fourth Proportional to 28,320.54, 39,084.39 and 15,747.18

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Solution

The fourth proportional to 28,320.54, 39,084.39 and 15,747.18 is: 21,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.54 : 39,084.39 = 15,747.18 : x
  2. Step 2: Convert to fraction form
    28,320.54/39,084.39 = 15,747.18/x
  3. Step 3: Cross multiply
    28,320.54x = 39,084.39 × 15,747.18
  4. Step 4: Simplify right side
    28,320.54x = 615,468,924.52
  5. Step 5: Solve for x
    x = 615,468,924.52/28,320.54
  6. Step 6: Final answer
    x = 21,732.25

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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.