Home / 12,765.28-17,618.16-10,668.64

Finding the Fourth Proportional to 12,765.28, 17,618.16 and 10,668.64

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Solution

The fourth proportional to 12,765.28, 17,618.16 and 10,668.64 is: 14,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.28 : 17,618.16 = 10,668.64 : x
  2. Step 2: Convert to fraction form
    12,765.28/17,618.16 = 10,668.64/x
  3. Step 3: Cross multiply
    12,765.28x = 17,618.16 × 10,668.64
  4. Step 4: Simplify right side
    12,765.28x = 187,961,806.50
  5. Step 5: Solve for x
    x = 187,961,806.50/12,765.28
  6. Step 6: Final answer
    x = 14,724.46

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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.