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Finding the Fourth Proportional to 11,687.01, 16,127.95 and 7,208.97

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Solution

The fourth proportional to 11,687.01, 16,127.95 and 7,208.97 is: 9,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.01 : 16,127.95 = 7,208.97 : x
  2. Step 2: Convert to fraction form
    11,687.01/16,127.95 = 7,208.97/x
  3. Step 3: Cross multiply
    11,687.01x = 16,127.95 × 7,208.97
  4. Step 4: Simplify right side
    11,687.01x = 116,265,907.71
  5. Step 5: Solve for x
    x = 116,265,907.71/11,687.01
  6. Step 6: Final answer
    x = 9,948.30

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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.