Home / 12,803.41-17,663.20-7,765.71

Finding the Fourth Proportional to 12,803.41, 17,663.20 and 7,765.71

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Solution

The fourth proportional to 12,803.41, 17,663.20 and 7,765.71 is: 10,713.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.41 : 17,663.20 = 7,765.71 : x
  2. Step 2: Convert to fraction form
    12,803.41/17,663.20 = 7,765.71/x
  3. Step 3: Cross multiply
    12,803.41x = 17,663.20 × 7,765.71
  4. Step 4: Simplify right side
    12,803.41x = 137,167,288.87
  5. Step 5: Solve for x
    x = 137,167,288.87/12,803.41
  6. Step 6: Final answer
    x = 10,713.34

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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.