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Finding the Fourth Proportional to 18,610, 27,898.50 and 6,915.01

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Solution

The fourth proportional to 18,610, 27,898.50 and 6,915.01 is: 10,366.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610 : 27,898.50 = 6,915.01 : x
  2. Step 2: Convert to fraction form
    18,610/27,898.50 = 6,915.01/x
  3. Step 3: Cross multiply
    18,610x = 27,898.50 × 6,915.01
  4. Step 4: Simplify right side
    18,610x = 192,918,406.49
  5. Step 5: Solve for x
    x = 192,918,406.49/18,610
  6. Step 6: Final answer
    x = 10,366.38

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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.