Home / 22,685.72-33,955.78-12,129.36

Finding the Fourth Proportional to 22,685.72, 33,955.78 and 12,129.36

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Solution

The fourth proportional to 22,685.72, 33,955.78 and 12,129.36 is: 18,155.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,685.72 : 33,955.78 = 12,129.36 : x
  2. Step 2: Convert to fraction form
    22,685.72/33,955.78 = 12,129.36/x
  3. Step 3: Cross multiply
    22,685.72x = 33,955.78 × 12,129.36
  4. Step 4: Simplify right side
    22,685.72x = 411,861,879.70
  5. Step 5: Solve for x
    x = 411,861,879.70/22,685.72
  6. Step 6: Final answer
    x = 18,155.12

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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.