Home / 12,342.52-18,513.78-5,771.80

Finding the Fourth Proportional to 12,342.52, 18,513.78 and 5,771.80

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Solution

The fourth proportional to 12,342.52, 18,513.78 and 5,771.80 is: 8,657.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.52 : 18,513.78 = 5,771.80 : x
  2. Step 2: Convert to fraction form
    12,342.52/18,513.78 = 5,771.80/x
  3. Step 3: Cross multiply
    12,342.52x = 18,513.78 × 5,771.80
  4. Step 4: Simplify right side
    12,342.52x = 106,857,835.40
  5. Step 5: Solve for x
    x = 106,857,835.40/12,342.52
  6. Step 6: Final answer
    x = 8,657.70

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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.