Home / 11,397.05-15,729.01-6,919.77

Finding the Fourth Proportional to 11,397.05, 15,729.01 and 6,919.77

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Solution

The fourth proportional to 11,397.05, 15,729.01 and 6,919.77 is: 9,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.05 : 15,729.01 = 6,919.77 : x
  2. Step 2: Convert to fraction form
    11,397.05/15,729.01 = 6,919.77/x
  3. Step 3: Cross multiply
    11,397.05x = 15,729.01 × 6,919.77
  4. Step 4: Simplify right side
    11,397.05x = 108,841,114.23
  5. Step 5: Solve for x
    x = 108,841,114.23/11,397.05
  6. Step 6: Final answer
    x = 9,549.94

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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.