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Finding the Fourth Proportional to 31,601.68, 47,405.24 and 8,228.16

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Solution

The fourth proportional to 31,601.68, 47,405.24 and 8,228.16 is: 12,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,601.68 : 47,405.24 = 8,228.16 : x
  2. Step 2: Convert to fraction form
    31,601.68/47,405.24 = 8,228.16/x
  3. Step 3: Cross multiply
    31,601.68x = 47,405.24 × 8,228.16
  4. Step 4: Simplify right side
    31,601.68x = 390,057,899.56
  5. Step 5: Solve for x
    x = 390,057,899.56/31,601.68
  6. Step 6: Final answer
    x = 12,342.95

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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.