Home / 31,553.45-47,328.80-7,861.10

Finding the Fourth Proportional to 31,553.45, 47,328.80 and 7,861.10

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Solution

The fourth proportional to 31,553.45, 47,328.80 and 7,861.10 is: 11,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,553.45 : 47,328.80 = 7,861.10 : x
  2. Step 2: Convert to fraction form
    31,553.45/47,328.80 = 7,861.10/x
  3. Step 3: Cross multiply
    31,553.45x = 47,328.80 × 7,861.10
  4. Step 4: Simplify right side
    31,553.45x = 372,056,153.73
  5. Step 5: Solve for x
    x = 372,056,153.73/31,553.45
  6. Step 6: Final answer
    x = 11,791.30

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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.