Home / 25,009.13-34,512.66-13,678.70

Finding the Fourth Proportional to 25,009.13, 34,512.66 and 13,678.70

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Solution

The fourth proportional to 25,009.13, 34,512.66 and 13,678.70 is: 18,876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,009.13 : 34,512.66 = 13,678.70 : x
  2. Step 2: Convert to fraction form
    25,009.13/34,512.66 = 13,678.70/x
  3. Step 3: Cross multiply
    25,009.13x = 34,512.66 × 13,678.70
  4. Step 4: Simplify right side
    25,009.13x = 472,088,149.78
  5. Step 5: Solve for x
    x = 472,088,149.78/25,009.13
  6. Step 6: Final answer
    x = 18,876.63

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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.