Home / 13,019.61-19,539.44-6,781.20

Finding the Fourth Proportional to 13,019.61, 19,539.44 and 6,781.20

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Solution

The fourth proportional to 13,019.61, 19,539.44 and 6,781.20 is: 10,177.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.61 : 19,539.44 = 6,781.20 : x
  2. Step 2: Convert to fraction form
    13,019.61/19,539.44 = 6,781.20/x
  3. Step 3: Cross multiply
    13,019.61x = 19,539.44 × 6,781.20
  4. Step 4: Simplify right side
    13,019.61x = 132,500,850.53
  5. Step 5: Solve for x
    x = 132,500,850.53/13,019.61
  6. Step 6: Final answer
    x = 10,177.02

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1.5x scale

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.