Home / 31,680.75-47,519.28-8,307.18

Finding the Fourth Proportional to 31,680.75, 47,519.28 and 8,307.18

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Solution

The fourth proportional to 31,680.75, 47,519.28 and 8,307.18 is: 12,460.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,680.75 : 47,519.28 = 8,307.18 : x
  2. Step 2: Convert to fraction form
    31,680.75/47,519.28 = 8,307.18/x
  3. Step 3: Cross multiply
    31,680.75x = 47,519.28 × 8,307.18
  4. Step 4: Simplify right side
    31,680.75x = 394,751,212.43
  5. Step 5: Solve for x
    x = 394,751,212.43/31,680.75
  6. Step 6: Final answer
    x = 12,460.29

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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.