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Finding the Fourth Proportional to 18,797.78, 28,208.82 and 8,948.18

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Solution

The fourth proportional to 18,797.78, 28,208.82 and 8,948.18 is: 13,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.78 : 28,208.82 = 8,948.18 : x
  2. Step 2: Convert to fraction form
    18,797.78/28,208.82 = 8,948.18/x
  3. Step 3: Cross multiply
    18,797.78x = 28,208.82 × 8,948.18
  4. Step 4: Simplify right side
    18,797.78x = 252,417,598.95
  5. Step 5: Solve for x
    x = 252,417,598.95/18,797.78
  6. Step 6: Final answer
    x = 13,428.05

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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.