Home / 31,816.32-47,724.42-8,440.92

Finding the Fourth Proportional to 31,816.32, 47,724.42 and 8,440.92

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Solution

The fourth proportional to 31,816.32, 47,724.42 and 8,440.92 is: 12,661.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,816.32 : 47,724.42 = 8,440.92 : x
  2. Step 2: Convert to fraction form
    31,816.32/47,724.42 = 8,440.92/x
  3. Step 3: Cross multiply
    31,816.32x = 47,724.42 × 8,440.92
  4. Step 4: Simplify right side
    31,816.32x = 402,838,011.27
  5. Step 5: Solve for x
    x = 402,838,011.27/31,816.32
  6. Step 6: Final answer
    x = 12,661.36

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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.