Home / 13,350.80-19,997.40-8,685.20

Finding the Fourth Proportional to 13,350.80, 19,997.40 and 8,685.20

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Solution

The fourth proportional to 13,350.80, 19,997.40 and 8,685.20 is: 13,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.80 : 19,997.40 = 8,685.20 : x
  2. Step 2: Convert to fraction form
    13,350.80/19,997.40 = 8,685.20/x
  3. Step 3: Cross multiply
    13,350.80x = 19,997.40 × 8,685.20
  4. Step 4: Simplify right side
    13,350.80x = 173,681,418.48
  5. Step 5: Solve for x
    x = 173,681,418.48/13,350.80
  6. Step 6: Final answer
    x = 13,009.06

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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.