Home / 12,454.55-17,163.63-8,911.61

Finding the Fourth Proportional to 12,454.55, 17,163.63 and 8,911.61

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Solution

The fourth proportional to 12,454.55, 17,163.63 and 8,911.61 is: 12,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.55 : 17,163.63 = 8,911.61 : x
  2. Step 2: Convert to fraction form
    12,454.55/17,163.63 = 8,911.61/x
  3. Step 3: Cross multiply
    12,454.55x = 17,163.63 × 8,911.61
  4. Step 4: Simplify right side
    12,454.55x = 152,955,490.93
  5. Step 5: Solve for x
    x = 152,955,490.93/12,454.55
  6. Step 6: Final answer
    x = 12,281.10

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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.