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Finding the Fourth Proportional to 30,574.39, 45,861.65 and 8,388.08

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Solution

The fourth proportional to 30,574.39, 45,861.65 and 8,388.08 is: 12,582.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,574.39 : 45,861.65 = 8,388.08 : x
  2. Step 2: Convert to fraction form
    30,574.39/45,861.65 = 8,388.08/x
  3. Step 3: Cross multiply
    30,574.39x = 45,861.65 × 8,388.08
  4. Step 4: Simplify right side
    30,574.39x = 384,691,147.19
  5. Step 5: Solve for x
    x = 384,691,147.19/30,574.39
  6. Step 6: Final answer
    x = 12,582.14

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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.