Home / 8,497.24-12,729.60-7,119.40

Finding the Fourth Proportional to 8,497.24, 12,729.60 and 7,119.40

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Solution

The fourth proportional to 8,497.24, 12,729.60 and 7,119.40 is: 10,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,497.24 : 12,729.60 = 7,119.40 : x
  2. Step 2: Convert to fraction form
    8,497.24/12,729.60 = 7,119.40/x
  3. Step 3: Cross multiply
    8,497.24x = 12,729.60 × 7,119.40
  4. Step 4: Simplify right side
    8,497.24x = 90,627,114.24
  5. Step 5: Solve for x
    x = 90,627,114.24/8,497.24
  6. Step 6: Final answer
    x = 10,665.48

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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.