Home / 34,379.12-47,441.40-20,239.76

Finding the Fourth Proportional to 34,379.12, 47,441.40 and 20,239.76

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Solution

The fourth proportional to 34,379.12, 47,441.40 and 20,239.76 is: 27,929.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,379.12 : 47,441.40 = 20,239.76 : x
  2. Step 2: Convert to fraction form
    34,379.12/47,441.40 = 20,239.76/x
  3. Step 3: Cross multiply
    34,379.12x = 47,441.40 × 20,239.76
  4. Step 4: Simplify right side
    34,379.12x = 960,202,550.06
  5. Step 5: Solve for x
    x = 960,202,550.06/34,379.12
  6. Step 6: Final answer
    x = 27,929.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.