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Finding the Fourth Proportional to 11,377.81, 15,696.86 and 6,899.93

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Solution

The fourth proportional to 11,377.81, 15,696.86 and 6,899.93 is: 9,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,377.81 : 15,696.86 = 6,899.93 : x
  2. Step 2: Convert to fraction form
    11,377.81/15,696.86 = 6,899.93/x
  3. Step 3: Cross multiply
    11,377.81x = 15,696.86 × 6,899.93
  4. Step 4: Simplify right side
    11,377.81x = 108,307,173.99
  5. Step 5: Solve for x
    x = 108,307,173.99/11,377.81
  6. Step 6: Final answer
    x = 9,519.16

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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.