Home / 25,340.78-34,967.20-14,008.72

Finding the Fourth Proportional to 25,340.78, 34,967.20 and 14,008.72

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Solution

The fourth proportional to 25,340.78, 34,967.20 and 14,008.72 is: 19,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,340.78 : 34,967.20 = 14,008.72 : x
  2. Step 2: Convert to fraction form
    25,340.78/34,967.20 = 14,008.72/x
  3. Step 3: Cross multiply
    25,340.78x = 34,967.20 × 14,008.72
  4. Step 4: Simplify right side
    25,340.78x = 489,845,469.10
  5. Step 5: Solve for x
    x = 489,845,469.10/25,340.78
  6. Step 6: Final answer
    x = 19,330.33

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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.