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Finding the Fourth Proportional to 13,488.08, 18,613.08 and 8,455.01

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Solution

The fourth proportional to 13,488.08, 18,613.08 and 8,455.01 is: 11,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.08 : 18,613.08 = 8,455.01 : x
  2. Step 2: Convert to fraction form
    13,488.08/18,613.08 = 8,455.01/x
  3. Step 3: Cross multiply
    13,488.08x = 18,613.08 × 8,455.01
  4. Step 4: Simplify right side
    13,488.08x = 157,373,684.47
  5. Step 5: Solve for x
    x = 157,373,684.47/13,488.08
  6. Step 6: Final answer
    x = 11,667.62

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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.