Home / 12,888.20-19,335.90-5,496.20

Finding the Fourth Proportional to 12,888.20, 19,335.90 and 5,496.20

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Solution

The fourth proportional to 12,888.20, 19,335.90 and 5,496.20 is: 8,245.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.20 : 19,335.90 = 5,496.20 : x
  2. Step 2: Convert to fraction form
    12,888.20/19,335.90 = 5,496.20/x
  3. Step 3: Cross multiply
    12,888.20x = 19,335.90 × 5,496.20
  4. Step 4: Simplify right side
    12,888.20x = 106,273,973.58
  5. Step 5: Solve for x
    x = 106,273,973.58/12,888.20
  6. Step 6: Final answer
    x = 8,245.84

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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.