Home / 12,255.40-18,358.80-7,310.35

Finding the Fourth Proportional to 12,255.40, 18,358.80 and 7,310.35

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Solution

The fourth proportional to 12,255.40, 18,358.80 and 7,310.35 is: 10,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.40 : 18,358.80 = 7,310.35 : x
  2. Step 2: Convert to fraction form
    12,255.40/18,358.80 = 7,310.35/x
  3. Step 3: Cross multiply
    12,255.40x = 18,358.80 × 7,310.35
  4. Step 4: Simplify right side
    12,255.40x = 134,209,253.58
  5. Step 5: Solve for x
    x = 134,209,253.58/12,255.40
  6. Step 6: Final answer
    x = 10,951.03

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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.