Home / 38,679.18-58,009.32-12,378.48

Finding the Fourth Proportional to 38,679.18, 58,009.32 and 12,378.48

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Solution

The fourth proportional to 38,679.18, 58,009.32 and 12,378.48 is: 18,564.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.18 : 58,009.32 = 12,378.48 : x
  2. Step 2: Convert to fraction form
    38,679.18/58,009.32 = 12,378.48/x
  3. Step 3: Cross multiply
    38,679.18x = 58,009.32 × 12,378.48
  4. Step 4: Simplify right side
    38,679.18x = 718,067,207.43
  5. Step 5: Solve for x
    x = 718,067,207.43/38,679.18
  6. Step 6: Final answer
    x = 18,564.70

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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.