Home / 12,431.28-17,153.64-7,395.60

Finding the Fourth Proportional to 12,431.28, 17,153.64 and 7,395.60

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Solution

The fourth proportional to 12,431.28, 17,153.64 and 7,395.60 is: 10,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.28 : 17,153.64 = 7,395.60 : x
  2. Step 2: Convert to fraction form
    12,431.28/17,153.64 = 7,395.60/x
  3. Step 3: Cross multiply
    12,431.28x = 17,153.64 × 7,395.60
  4. Step 4: Simplify right side
    12,431.28x = 126,861,459.98
  5. Step 5: Solve for x
    x = 126,861,459.98/12,431.28
  6. Step 6: Final answer
    x = 10,205.02

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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.