Home / 12,456.32-18,686.70-4,134.78

Finding the Fourth Proportional to 12,456.32, 18,686.70 and 4,134.78

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Solution

The fourth proportional to 12,456.32, 18,686.70 and 4,134.78 is: 6,202.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.32 : 18,686.70 = 4,134.78 : x
  2. Step 2: Convert to fraction form
    12,456.32/18,686.70 = 4,134.78/x
  3. Step 3: Cross multiply
    12,456.32x = 18,686.70 × 4,134.78
  4. Step 4: Simplify right side
    12,456.32x = 77,265,393.43
  5. Step 5: Solve for x
    x = 77,265,393.43/12,456.32
  6. Step 6: Final answer
    x = 6,202.91

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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.