Home / 31,909.22-47,863.81-8,535.05

Finding the Fourth Proportional to 31,909.22, 47,863.81 and 8,535.05

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Solution

The fourth proportional to 31,909.22, 47,863.81 and 8,535.05 is: 12,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,909.22 : 47,863.81 = 8,535.05 : x
  2. Step 2: Convert to fraction form
    31,909.22/47,863.81 = 8,535.05/x
  3. Step 3: Cross multiply
    31,909.22x = 47,863.81 × 8,535.05
  4. Step 4: Simplify right side
    31,909.22x = 408,520,011.54
  5. Step 5: Solve for x
    x = 408,520,011.54/31,909.22
  6. Step 6: Final answer
    x = 12,802.57

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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.