Home / 12,719.86-19,002.40-8,241.06

Finding the Fourth Proportional to 12,719.86, 19,002.40 and 8,241.06

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Solution

The fourth proportional to 12,719.86, 19,002.40 and 8,241.06 is: 12,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.86 : 19,002.40 = 8,241.06 : x
  2. Step 2: Convert to fraction form
    12,719.86/19,002.40 = 8,241.06/x
  3. Step 3: Cross multiply
    12,719.86x = 19,002.40 × 8,241.06
  4. Step 4: Simplify right side
    12,719.86x = 156,599,918.54
  5. Step 5: Solve for x
    x = 156,599,918.54/12,719.86
  6. Step 6: Final answer
    x = 12,311.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.