Home / 12,547.17-18,823.92-8,856.61

Finding the Fourth Proportional to 12,547.17, 18,823.92 and 8,856.61

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Solution

The fourth proportional to 12,547.17, 18,823.92 and 8,856.61 is: 13,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.17 : 18,823.92 = 8,856.61 : x
  2. Step 2: Convert to fraction form
    12,547.17/18,823.92 = 8,856.61/x
  3. Step 3: Cross multiply
    12,547.17x = 18,823.92 × 8,856.61
  4. Step 4: Simplify right side
    12,547.17x = 166,716,118.11
  5. Step 5: Solve for x
    x = 166,716,118.11/12,547.17
  6. Step 6: Final answer
    x = 13,287.15

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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.