Home / 15,765.07-21,756.24-8,691.94

Finding the Fourth Proportional to 15,765.07, 21,756.24 and 8,691.94

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Solution

The fourth proportional to 15,765.07, 21,756.24 and 8,691.94 is: 11,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.07 : 21,756.24 = 8,691.94 : x
  2. Step 2: Convert to fraction form
    15,765.07/21,756.24 = 8,691.94/x
  3. Step 3: Cross multiply
    15,765.07x = 21,756.24 × 8,691.94
  4. Step 4: Simplify right side
    15,765.07x = 189,103,932.71
  5. Step 5: Solve for x
    x = 189,103,932.71/15,765.07
  6. Step 6: Final answer
    x = 11,995.12

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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.