Home / 34,178.89-47,170.12-20,747.06

Finding the Fourth Proportional to 34,178.89, 47,170.12 and 20,747.06

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Solution

The fourth proportional to 34,178.89, 47,170.12 and 20,747.06 is: 28,632.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,178.89 : 47,170.12 = 20,747.06 : x
  2. Step 2: Convert to fraction form
    34,178.89/47,170.12 = 20,747.06/x
  3. Step 3: Cross multiply
    34,178.89x = 47,170.12 × 20,747.06
  4. Step 4: Simplify right side
    34,178.89x = 978,641,309.85
  5. Step 5: Solve for x
    x = 978,641,309.85/34,178.89
  6. Step 6: Final answer
    x = 28,632.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.