Home / 11,849.28-16,344.34-7,129

Finding the Fourth Proportional to 11,849.28, 16,344.34 and 7,129

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Solution

The fourth proportional to 11,849.28, 16,344.34 and 7,129 is: 9,833.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,849.28 : 16,344.34 = 7,129 : x
  2. Step 2: Convert to fraction form
    11,849.28/16,344.34 = 7,129/x
  3. Step 3: Cross multiply
    11,849.28x = 16,344.34 × 7,129
  4. Step 4: Simplify right side
    11,849.28x = 116,518,799.86
  5. Step 5: Solve for x
    x = 116,518,799.86/11,849.28
  6. Step 6: Final answer
    x = 9,833.41

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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.