Home / 25,078.78-34,584.84-15,005.62

Finding the Fourth Proportional to 25,078.78, 34,584.84 and 15,005.62

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Solution

The fourth proportional to 25,078.78, 34,584.84 and 15,005.62 is: 20,693.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,078.78 : 34,584.84 = 15,005.62 : x
  2. Step 2: Convert to fraction form
    25,078.78/34,584.84 = 15,005.62/x
  3. Step 3: Cross multiply
    25,078.78x = 34,584.84 × 15,005.62
  4. Step 4: Simplify right side
    25,078.78x = 518,966,966.80
  5. Step 5: Solve for x
    x = 518,966,966.80/25,078.78
  6. Step 6: Final answer
    x = 20,693.47

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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.