Home / 12,853.40-19,265.70-5,456.60

Finding the Fourth Proportional to 12,853.40, 19,265.70 and 5,456.60

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Solution

The fourth proportional to 12,853.40, 19,265.70 and 5,456.60 is: 8,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.40 : 19,265.70 = 5,456.60 : x
  2. Step 2: Convert to fraction form
    12,853.40/19,265.70 = 5,456.60/x
  3. Step 3: Cross multiply
    12,853.40x = 19,265.70 × 5,456.60
  4. Step 4: Simplify right side
    12,853.40x = 105,125,218.62
  5. Step 5: Solve for x
    x = 105,125,218.62/12,853.40
  6. Step 6: Final answer
    x = 8,178.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.