Home / 39,081.42-58,634.79-12,780.18

Finding the Fourth Proportional to 39,081.42, 58,634.79 and 12,780.18

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Solution

The fourth proportional to 39,081.42, 58,634.79 and 12,780.18 is: 19,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,081.42 : 58,634.79 = 12,780.18 : x
  2. Step 2: Convert to fraction form
    39,081.42/58,634.79 = 12,780.18/x
  3. Step 3: Cross multiply
    39,081.42x = 58,634.79 × 12,780.18
  4. Step 4: Simplify right side
    39,081.42x = 749,363,170.46
  5. Step 5: Solve for x
    x = 749,363,170.46/39,081.42
  6. Step 6: Final answer
    x = 19,174.41

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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.