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Finding the Fourth Proportional to 11,943.99, 16,483.10 and 6,639.71

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Solution

The fourth proportional to 11,943.99, 16,483.10 and 6,639.71 is: 9,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.99 : 16,483.10 = 6,639.71 : x
  2. Step 2: Convert to fraction form
    11,943.99/16,483.10 = 6,639.71/x
  3. Step 3: Cross multiply
    11,943.99x = 16,483.10 × 6,639.71
  4. Step 4: Simplify right side
    11,943.99x = 109,442,888.29
  5. Step 5: Solve for x
    x = 109,442,888.29/11,943.99
  6. Step 6: Final answer
    x = 9,163.01

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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.