Home / 13,320.54-19,981.53-3,459.56

Finding the Fourth Proportional to 13,320.54, 19,981.53 and 3,459.56

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Solution

The fourth proportional to 13,320.54, 19,981.53 and 3,459.56 is: 5,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.54 : 19,981.53 = 3,459.56 : x
  2. Step 2: Convert to fraction form
    13,320.54/19,981.53 = 3,459.56/x
  3. Step 3: Cross multiply
    13,320.54x = 19,981.53 × 3,459.56
  4. Step 4: Simplify right side
    13,320.54x = 69,127,202.02
  5. Step 5: Solve for x
    x = 69,127,202.02/13,320.54
  6. Step 6: Final answer
    x = 5,189.52

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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.