Home / 12,880.24-17,771.16-7,291.12

Finding the Fourth Proportional to 12,880.24, 17,771.16 and 7,291.12

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Solution

The fourth proportional to 12,880.24, 17,771.16 and 7,291.12 is: 10,059.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.24 : 17,771.16 = 7,291.12 : x
  2. Step 2: Convert to fraction form
    12,880.24/17,771.16 = 7,291.12/x
  3. Step 3: Cross multiply
    12,880.24x = 17,771.16 × 7,291.12
  4. Step 4: Simplify right side
    12,880.24x = 129,571,660.10
  5. Step 5: Solve for x
    x = 129,571,660.10/12,880.24
  6. Step 6: Final answer
    x = 10,059.72

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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.