Home / 13,294.40-19,928.80-10,331.20

Finding the Fourth Proportional to 13,294.40, 19,928.80 and 10,331.20

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Solution

The fourth proportional to 13,294.40, 19,928.80 and 10,331.20 is: 15,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.40 : 19,928.80 = 10,331.20 : x
  2. Step 2: Convert to fraction form
    13,294.40/19,928.80 = 10,331.20/x
  3. Step 3: Cross multiply
    13,294.40x = 19,928.80 × 10,331.20
  4. Step 4: Simplify right side
    13,294.40x = 205,888,418.56
  5. Step 5: Solve for x
    x = 205,888,418.56/13,294.40
  6. Step 6: Final answer
    x = 15,486.85

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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.