Home / 18,663.12-25,758.06-11,109.78

Finding the Fourth Proportional to 18,663.12, 25,758.06 and 11,109.78

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Solution

The fourth proportional to 18,663.12, 25,758.06 and 11,109.78 is: 15,333.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.12 : 25,758.06 = 11,109.78 : x
  2. Step 2: Convert to fraction form
    18,663.12/25,758.06 = 11,109.78/x
  3. Step 3: Cross multiply
    18,663.12x = 25,758.06 × 11,109.78
  4. Step 4: Simplify right side
    18,663.12x = 286,166,379.83
  5. Step 5: Solve for x
    x = 286,166,379.83/18,663.12
  6. Step 6: Final answer
    x = 15,333.26

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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.