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Finding the Fourth Proportional to 19,907.64, 27,472.68 and 10,954.89

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Solution

The fourth proportional to 19,907.64, 27,472.68 and 10,954.89 is: 15,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.64 : 27,472.68 = 10,954.89 : x
  2. Step 2: Convert to fraction form
    19,907.64/27,472.68 = 10,954.89/x
  3. Step 3: Cross multiply
    19,907.64x = 27,472.68 × 10,954.89
  4. Step 4: Simplify right side
    19,907.64x = 300,960,187.41
  5. Step 5: Solve for x
    x = 300,960,187.41/19,907.64
  6. Step 6: Final answer
    x = 15,117.82

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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.