Home / 25,578.54-38,371.32-12,429.18

Finding the Fourth Proportional to 25,578.54, 38,371.32 and 12,429.18

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Solution

The fourth proportional to 25,578.54, 38,371.32 and 12,429.18 is: 18,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,578.54 : 38,371.32 = 12,429.18 : x
  2. Step 2: Convert to fraction form
    25,578.54/38,371.32 = 12,429.18/x
  3. Step 3: Cross multiply
    25,578.54x = 38,371.32 × 12,429.18
  4. Step 4: Simplify right side
    25,578.54x = 476,924,043.12
  5. Step 5: Solve for x
    x = 476,924,043.12/25,578.54
  6. Step 6: Final answer
    x = 18,645.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.