Home / 12,919.68-17,829.28-7,330.24

Finding the Fourth Proportional to 12,919.68, 17,829.28 and 7,330.24

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Solution

The fourth proportional to 12,919.68, 17,829.28 and 7,330.24 is: 10,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.68 : 17,829.28 = 7,330.24 : x
  2. Step 2: Convert to fraction form
    12,919.68/17,829.28 = 7,330.24/x
  3. Step 3: Cross multiply
    12,919.68x = 17,829.28 × 7,330.24
  4. Step 4: Simplify right side
    12,919.68x = 130,692,901.43
  5. Step 5: Solve for x
    x = 130,692,901.43/12,919.68
  6. Step 6: Final answer
    x = 10,115.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.