Home / 25,420.08-38,121.35-10,422.95

Finding the Fourth Proportional to 25,420.08, 38,121.35 and 10,422.95

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Solution

The fourth proportional to 25,420.08, 38,121.35 and 10,422.95 is: 15,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.08 : 38,121.35 = 10,422.95 : x
  2. Step 2: Convert to fraction form
    25,420.08/38,121.35 = 10,422.95/x
  3. Step 3: Cross multiply
    25,420.08x = 38,121.35 × 10,422.95
  4. Step 4: Simplify right side
    25,420.08x = 397,336,682.26
  5. Step 5: Solve for x
    x = 397,336,682.26/25,420.08
  6. Step 6: Final answer
    x = 15,630.82

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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.