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Finding the Fourth Proportional to 11,689.52, 16,126.39 and 6,971.06

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Solution

The fourth proportional to 11,689.52, 16,126.39 and 6,971.06 is: 9,617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.52 : 16,126.39 = 6,971.06 : x
  2. Step 2: Convert to fraction form
    11,689.52/16,126.39 = 6,971.06/x
  3. Step 3: Cross multiply
    11,689.52x = 16,126.39 × 6,971.06
  4. Step 4: Simplify right side
    11,689.52x = 112,418,081.30
  5. Step 5: Solve for x
    x = 112,418,081.30/11,689.52
  6. Step 6: Final answer
    x = 9,617.00

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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.