Home / 18,677.74-25,769.78-11,120.29

Finding the Fourth Proportional to 18,677.74, 25,769.78 and 11,120.29

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Solution

The fourth proportional to 18,677.74, 25,769.78 and 11,120.29 is: 15,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.74 : 25,769.78 = 11,120.29 : x
  2. Step 2: Convert to fraction form
    18,677.74/25,769.78 = 11,120.29/x
  3. Step 3: Cross multiply
    18,677.74x = 25,769.78 × 11,120.29
  4. Step 4: Simplify right side
    18,677.74x = 286,567,242.39
  5. Step 5: Solve for x
    x = 286,567,242.39/18,677.74
  6. Step 6: Final answer
    x = 15,342.72

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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.