Home / 13,320.13-19,961.15-9,782.39

Finding the Fourth Proportional to 13,320.13, 19,961.15 and 9,782.39

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Solution

The fourth proportional to 13,320.13, 19,961.15 and 9,782.39 is: 14,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.13 : 19,961.15 = 9,782.39 : x
  2. Step 2: Convert to fraction form
    13,320.13/19,961.15 = 9,782.39/x
  3. Step 3: Cross multiply
    13,320.13x = 19,961.15 × 9,782.39
  4. Step 4: Simplify right side
    13,320.13x = 195,267,754.15
  5. Step 5: Solve for x
    x = 195,267,754.15/13,320.13
  6. Step 6: Final answer
    x = 14,659.60

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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.