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Finding the Fourth Proportional to 18,763.11, 28,148.08 and 8,902.30

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Solution

The fourth proportional to 18,763.11, 28,148.08 and 8,902.30 is: 13,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.11 : 28,148.08 = 8,902.30 : x
  2. Step 2: Convert to fraction form
    18,763.11/28,148.08 = 8,902.30/x
  3. Step 3: Cross multiply
    18,763.11x = 28,148.08 × 8,902.30
  4. Step 4: Simplify right side
    18,763.11x = 250,582,652.58
  5. Step 5: Solve for x
    x = 250,582,652.58/18,763.11
  6. Step 6: Final answer
    x = 13,355.07

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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.