Home / 13,853.40-19,115.35-7,882.89

Finding the Fourth Proportional to 13,853.40, 19,115.35 and 7,882.89

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Solution

The fourth proportional to 13,853.40, 19,115.35 and 7,882.89 is: 10,877.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.40 : 19,115.35 = 7,882.89 : x
  2. Step 2: Convert to fraction form
    13,853.40/19,115.35 = 7,882.89/x
  3. Step 3: Cross multiply
    13,853.40x = 19,115.35 × 7,882.89
  4. Step 4: Simplify right side
    13,853.40x = 150,684,201.36
  5. Step 5: Solve for x
    x = 150,684,201.36/13,853.40
  6. Step 6: Final answer
    x = 10,877.06

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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.