Home / 12,619.32-18,931.67-3,854.88

Finding the Fourth Proportional to 12,619.32, 18,931.67 and 3,854.88

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Solution

The fourth proportional to 12,619.32, 18,931.67 and 3,854.88 is: 5,783.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.32 : 18,931.67 = 3,854.88 : x
  2. Step 2: Convert to fraction form
    12,619.32/18,931.67 = 3,854.88/x
  3. Step 3: Cross multiply
    12,619.32x = 18,931.67 × 3,854.88
  4. Step 4: Simplify right side
    12,619.32x = 72,979,316.05
  5. Step 5: Solve for x
    x = 72,979,316.05/12,619.32
  6. Step 6: Final answer
    x = 5,783.14

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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.