Home / 31,555.20-47,314.80-11,834.40

Finding the Fourth Proportional to 31,555.20, 47,314.80 and 11,834.40

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Solution

The fourth proportional to 31,555.20, 47,314.80 and 11,834.40 is: 17,744.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.20 : 47,314.80 = 11,834.40 : x
  2. Step 2: Convert to fraction form
    31,555.20/47,314.80 = 11,834.40/x
  3. Step 3: Cross multiply
    31,555.20x = 47,314.80 × 11,834.40
  4. Step 4: Simplify right side
    31,555.20x = 559,942,269.12
  5. Step 5: Solve for x
    x = 559,942,269.12/31,555.20
  6. Step 6: Final answer
    x = 17,744.85

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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.