Home / 12,281.13-18,406.28-5,252.88

Finding the Fourth Proportional to 12,281.13, 18,406.28 and 5,252.88

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Solution

The fourth proportional to 12,281.13, 18,406.28 and 5,252.88 is: 7,872.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.13 : 18,406.28 = 5,252.88 : x
  2. Step 2: Convert to fraction form
    12,281.13/18,406.28 = 5,252.88/x
  3. Step 3: Cross multiply
    12,281.13x = 18,406.28 × 5,252.88
  4. Step 4: Simplify right side
    12,281.13x = 96,685,980.09
  5. Step 5: Solve for x
    x = 96,685,980.09/12,281.13
  6. Step 6: Final answer
    x = 7,872.73

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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.