Home / 25,470.12-35,148.90-14,139.78

Finding the Fourth Proportional to 25,470.12, 35,148.90 and 14,139.78

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Solution

The fourth proportional to 25,470.12, 35,148.90 and 14,139.78 is: 19,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,470.12 : 35,148.90 = 14,139.78 : x
  2. Step 2: Convert to fraction form
    25,470.12/35,148.90 = 14,139.78/x
  3. Step 3: Cross multiply
    25,470.12x = 35,148.90 × 14,139.78
  4. Step 4: Simplify right side
    25,470.12x = 496,997,713.24
  5. Step 5: Solve for x
    x = 496,997,713.24/25,470.12
  6. Step 6: Final answer
    x = 19,512.97

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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.