Home / 20,217.08-27,888.75-12,257.61

Finding the Fourth Proportional to 20,217.08, 27,888.75 and 12,257.61

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Solution

The fourth proportional to 20,217.08, 27,888.75 and 12,257.61 is: 16,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.08 : 27,888.75 = 12,257.61 : x
  2. Step 2: Convert to fraction form
    20,217.08/27,888.75 = 12,257.61/x
  3. Step 3: Cross multiply
    20,217.08x = 27,888.75 × 12,257.61
  4. Step 4: Simplify right side
    20,217.08x = 341,849,420.89
  5. Step 5: Solve for x
    x = 341,849,420.89/20,217.08
  6. Step 6: Final answer
    x = 16,908.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.