Home / 38,913.17-58,378.28-12,620.57

Finding the Fourth Proportional to 38,913.17, 58,378.28 and 12,620.57

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Solution

The fourth proportional to 38,913.17, 58,378.28 and 12,620.57 is: 18,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,913.17 : 58,378.28 = 12,620.57 : x
  2. Step 2: Convert to fraction form
    38,913.17/58,378.28 = 12,620.57/x
  3. Step 3: Cross multiply
    38,913.17x = 58,378.28 × 12,620.57
  4. Step 4: Simplify right side
    38,913.17x = 736,766,814.23
  5. Step 5: Solve for x
    x = 736,766,814.23/38,913.17
  6. Step 6: Final answer
    x = 18,933.61

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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.