Home / 12,685.48-19,014.56-5,287.96

Finding the Fourth Proportional to 12,685.48, 19,014.56 and 5,287.96

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Solution

The fourth proportional to 12,685.48, 19,014.56 and 5,287.96 is: 7,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.48 : 19,014.56 = 5,287.96 : x
  2. Step 2: Convert to fraction form
    12,685.48/19,014.56 = 5,287.96/x
  3. Step 3: Cross multiply
    12,685.48x = 19,014.56 × 5,287.96
  4. Step 4: Simplify right side
    12,685.48x = 100,548,232.70
  5. Step 5: Solve for x
    x = 100,548,232.70/12,685.48
  6. Step 6: Final answer
    x = 7,926.25

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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.