Home / 12,255.84-18,378.36-3,488.76

Finding the Fourth Proportional to 12,255.84, 18,378.36 and 3,488.76

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Solution

The fourth proportional to 12,255.84, 18,378.36 and 3,488.76 is: 5,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.84 : 18,378.36 = 3,488.76 : x
  2. Step 2: Convert to fraction form
    12,255.84/18,378.36 = 3,488.76/x
  3. Step 3: Cross multiply
    12,255.84x = 18,378.36 × 3,488.76
  4. Step 4: Simplify right side
    12,255.84x = 64,117,687.23
  5. Step 5: Solve for x
    x = 64,117,687.23/12,255.84
  6. Step 6: Final answer
    x = 5,231.60

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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.