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Finding the Fourth Proportional to 18,675.88, 28,018.62 and 6,363.88

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Solution

The fourth proportional to 18,675.88, 28,018.62 and 6,363.88 is: 9,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.88 : 28,018.62 = 6,363.88 : x
  2. Step 2: Convert to fraction form
    18,675.88/28,018.62 = 6,363.88/x
  3. Step 3: Cross multiply
    18,675.88x = 28,018.62 × 6,363.88
  4. Step 4: Simplify right side
    18,675.88x = 178,306,963.53
  5. Step 5: Solve for x
    x = 178,306,963.53/18,675.88
  6. Step 6: Final answer
    x = 9,547.45

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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.