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Finding the Fourth Proportional to 11,555.66, 15,946.79 and 6,519.87

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Solution

The fourth proportional to 11,555.66, 15,946.79 and 6,519.87 is: 8,997.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.66 : 15,946.79 = 6,519.87 : x
  2. Step 2: Convert to fraction form
    11,555.66/15,946.79 = 6,519.87/x
  3. Step 3: Cross multiply
    11,555.66x = 15,946.79 × 6,519.87
  4. Step 4: Simplify right side
    11,555.66x = 103,970,965.12
  5. Step 5: Solve for x
    x = 103,970,965.12/11,555.66
  6. Step 6: Final answer
    x = 8,997.41

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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.