Home / 19,278.80-28,918.20-15,998.30

Finding the Fourth Proportional to 19,278.80, 28,918.20 and 15,998.30

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Solution

The fourth proportional to 19,278.80, 28,918.20 and 15,998.30 is: 23,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.80 : 28,918.20 = 15,998.30 : x
  2. Step 2: Convert to fraction form
    19,278.80/28,918.20 = 15,998.30/x
  3. Step 3: Cross multiply
    19,278.80x = 28,918.20 × 15,998.30
  4. Step 4: Simplify right side
    19,278.80x = 462,642,039.06
  5. Step 5: Solve for x
    x = 462,642,039.06/19,278.80
  6. Step 6: Final answer
    x = 23,997.45

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Similar ratio
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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.