Home / 31,830.92-47,747.58-12,105.80

Finding the Fourth Proportional to 31,830.92, 47,747.58 and 12,105.80

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Solution

The fourth proportional to 31,830.92, 47,747.58 and 12,105.80 is: 18,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,830.92 : 47,747.58 = 12,105.80 : x
  2. Step 2: Convert to fraction form
    31,830.92/47,747.58 = 12,105.80/x
  3. Step 3: Cross multiply
    31,830.92x = 47,747.58 × 12,105.80
  4. Step 4: Simplify right side
    31,830.92x = 578,022,653.96
  5. Step 5: Solve for x
    x = 578,022,653.96/31,830.92
  6. Step 6: Final answer
    x = 18,159.16

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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.