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Finding the Fourth Proportional to 13,394.68, 18,482.46 and 8,358.08

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Solution

The fourth proportional to 13,394.68, 18,482.46 and 8,358.08 is: 11,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.68 : 18,482.46 = 8,358.08 : x
  2. Step 2: Convert to fraction form
    13,394.68/18,482.46 = 8,358.08/x
  3. Step 3: Cross multiply
    13,394.68x = 18,482.46 × 8,358.08
  4. Step 4: Simplify right side
    13,394.68x = 154,477,879.28
  5. Step 5: Solve for x
    x = 154,477,879.28/13,394.68
  6. Step 6: Final answer
    x = 11,532.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.