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Finding the Fourth Proportional to 18,009.62, 27,017.93 and 6,915.49

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Solution

The fourth proportional to 18,009.62, 27,017.93 and 6,915.49 is: 10,374.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.62 : 27,017.93 = 6,915.49 : x
  2. Step 2: Convert to fraction form
    18,009.62/27,017.93 = 6,915.49/x
  3. Step 3: Cross multiply
    18,009.62x = 27,017.93 × 6,915.49
  4. Step 4: Simplify right side
    18,009.62x = 186,842,326.46
  5. Step 5: Solve for x
    x = 186,842,326.46/18,009.62
  6. Step 6: Final answer
    x = 10,374.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.