Home / 11,158.91-15,399.75-6,681.77

Finding the Fourth Proportional to 11,158.91, 15,399.75 and 6,681.77

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Solution

The fourth proportional to 11,158.91, 15,399.75 and 6,681.77 is: 9,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.91 : 15,399.75 = 6,681.77 : x
  2. Step 2: Convert to fraction form
    11,158.91/15,399.75 = 6,681.77/x
  3. Step 3: Cross multiply
    11,158.91x = 15,399.75 × 6,681.77
  4. Step 4: Simplify right side
    11,158.91x = 102,897,651.11
  5. Step 5: Solve for x
    x = 102,897,651.11/11,158.91
  6. Step 6: Final answer
    x = 9,221.12

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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.