Home / 13,344.72-18,422.40-8,632.80

Finding the Fourth Proportional to 13,344.72, 18,422.40 and 8,632.80

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Solution

The fourth proportional to 13,344.72, 18,422.40 and 8,632.80 is: 11,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.72 : 18,422.40 = 8,632.80 : x
  2. Step 2: Convert to fraction form
    13,344.72/18,422.40 = 8,632.80/x
  3. Step 3: Cross multiply
    13,344.72x = 18,422.40 × 8,632.80
  4. Step 4: Simplify right side
    13,344.72x = 159,036,894.72
  5. Step 5: Solve for x
    x = 159,036,894.72/13,344.72
  6. Step 6: Final answer
    x = 11,917.59

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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.