Home / 12,547.29-18,824.07-8,856.72

Finding the Fourth Proportional to 12,547.29, 18,824.07 and 8,856.72

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Solution

The fourth proportional to 12,547.29, 18,824.07 and 8,856.72 is: 13,287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.29 : 18,824.07 = 8,856.72 : x
  2. Step 2: Convert to fraction form
    12,547.29/18,824.07 = 8,856.72/x
  3. Step 3: Cross multiply
    12,547.29x = 18,824.07 × 8,856.72
  4. Step 4: Simplify right side
    12,547.29x = 166,719,517.25
  5. Step 5: Solve for x
    x = 166,719,517.25/12,547.29
  6. Step 6: Final answer
    x = 13,287.29

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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.