Home / 31,690.05-47,532.60-8,315.88

Finding the Fourth Proportional to 31,690.05, 47,532.60 and 8,315.88

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Solution

The fourth proportional to 31,690.05, 47,532.60 and 8,315.88 is: 12,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.05 : 47,532.60 = 8,315.88 : x
  2. Step 2: Convert to fraction form
    31,690.05/47,532.60 = 8,315.88/x
  3. Step 3: Cross multiply
    31,690.05x = 47,532.60 × 8,315.88
  4. Step 4: Simplify right side
    31,690.05x = 395,275,397.69
  5. Step 5: Solve for x
    x = 395,275,397.69/31,690.05
  6. Step 6: Final answer
    x = 12,473.17

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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.