Home / 13,923.89-19,218.66-8,615.70

Finding the Fourth Proportional to 13,923.89, 19,218.66 and 8,615.70

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Solution

The fourth proportional to 13,923.89, 19,218.66 and 8,615.70 is: 11,891.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.89 : 19,218.66 = 8,615.70 : x
  2. Step 2: Convert to fraction form
    13,923.89/19,218.66 = 8,615.70/x
  3. Step 3: Cross multiply
    13,923.89x = 19,218.66 × 8,615.70
  4. Step 4: Simplify right side
    13,923.89x = 165,582,208.96
  5. Step 5: Solve for x
    x = 165,582,208.96/13,923.89
  6. Step 6: Final answer
    x = 11,891.95

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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.