Home / 31,911.12-47,865.33-13,186.08

Finding the Fourth Proportional to 31,911.12, 47,865.33 and 13,186.08

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Solution

The fourth proportional to 31,911.12, 47,865.33 and 13,186.08 is: 19,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.12 : 47,865.33 = 13,186.08 : x
  2. Step 2: Convert to fraction form
    31,911.12/47,865.33 = 13,186.08/x
  3. Step 3: Cross multiply
    31,911.12x = 47,865.33 × 13,186.08
  4. Step 4: Simplify right side
    31,911.12x = 631,156,070.61
  5. Step 5: Solve for x
    x = 631,156,070.61/31,911.12
  6. Step 6: Final answer
    x = 19,778.56

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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.