Home / 31,461.12-47,191.68-8,087.58

Finding the Fourth Proportional to 31,461.12, 47,191.68 and 8,087.58

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Solution

The fourth proportional to 31,461.12, 47,191.68 and 8,087.58 is: 12,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,461.12 : 47,191.68 = 8,087.58 : x
  2. Step 2: Convert to fraction form
    31,461.12/47,191.68 = 8,087.58/x
  3. Step 3: Cross multiply
    31,461.12x = 47,191.68 × 8,087.58
  4. Step 4: Simplify right side
    31,461.12x = 381,666,487.33
  5. Step 5: Solve for x
    x = 381,666,487.33/31,461.12
  6. Step 6: Final answer
    x = 12,131.37

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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.