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Finding the Fourth Proportional to 18,607.36, 27,915.12 and 6,126.88

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Solution

The fourth proportional to 18,607.36, 27,915.12 and 6,126.88 is: 9,191.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.36 : 27,915.12 = 6,126.88 : x
  2. Step 2: Convert to fraction form
    18,607.36/27,915.12 = 6,126.88/x
  3. Step 3: Cross multiply
    18,607.36x = 27,915.12 × 6,126.88
  4. Step 4: Simplify right side
    18,607.36x = 171,032,590.43
  5. Step 5: Solve for x
    x = 171,032,590.43/18,607.36
  6. Step 6: Final answer
    x = 9,191.66

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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.