Home / 38,932.76-58,415.88-12,645.56

Finding the Fourth Proportional to 38,932.76, 58,415.88 and 12,645.56

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Solution

The fourth proportional to 38,932.76, 58,415.88 and 12,645.56 is: 18,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,932.76 : 58,415.88 = 12,645.56 : x
  2. Step 2: Convert to fraction form
    38,932.76/58,415.88 = 12,645.56/x
  3. Step 3: Cross multiply
    38,932.76x = 58,415.88 × 12,645.56
  4. Step 4: Simplify right side
    38,932.76x = 738,701,515.49
  5. Step 5: Solve for x
    x = 738,701,515.49/38,932.76
  6. Step 6: Final answer
    x = 18,973.78

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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.