Home / 17,876.40-24,669.54-9,918.78

Finding the Fourth Proportional to 17,876.40, 24,669.54 and 9,918.78

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Solution

The fourth proportional to 17,876.40, 24,669.54 and 9,918.78 is: 13,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.40 : 24,669.54 = 9,918.78 : x
  2. Step 2: Convert to fraction form
    17,876.40/24,669.54 = 9,918.78/x
  3. Step 3: Cross multiply
    17,876.40x = 24,669.54 × 9,918.78
  4. Step 4: Simplify right side
    17,876.40x = 244,691,739.96
  5. Step 5: Solve for x
    x = 244,691,739.96/17,876.40
  6. Step 6: Final answer
    x = 13,687.98

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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.