Home / 13,320.28-19,980.33-3,459.52

Finding the Fourth Proportional to 13,320.28, 19,980.33 and 3,459.52

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Solution

The fourth proportional to 13,320.28, 19,980.33 and 3,459.52 is: 5,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.28 : 19,980.33 = 3,459.52 : x
  2. Step 2: Convert to fraction form
    13,320.28/19,980.33 = 3,459.52/x
  3. Step 3: Cross multiply
    13,320.28x = 19,980.33 × 3,459.52
  4. Step 4: Simplify right side
    13,320.28x = 69,122,351.24
  5. Step 5: Solve for x
    x = 69,122,351.24/13,320.28
  6. Step 6: Final answer
    x = 5,189.26

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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.