Home / 31,817.52-47,722.62-8,445.78

Finding the Fourth Proportional to 31,817.52, 47,722.62 and 8,445.78

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Solution

The fourth proportional to 31,817.52, 47,722.62 and 8,445.78 is: 12,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,817.52 : 47,722.62 = 8,445.78 : x
  2. Step 2: Convert to fraction form
    31,817.52/47,722.62 = 8,445.78/x
  3. Step 3: Cross multiply
    31,817.52x = 47,722.62 × 8,445.78
  4. Step 4: Simplify right side
    31,817.52x = 403,054,749.54
  5. Step 5: Solve for x
    x = 403,054,749.54/31,817.52
  6. Step 6: Final answer
    x = 12,667.70

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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.