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Finding the Fourth Proportional to 18,952.96, 26,129.64 and 13,280.08

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Solution

The fourth proportional to 18,952.96, 26,129.64 and 13,280.08 is: 18,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.96 : 26,129.64 = 13,280.08 : x
  2. Step 2: Convert to fraction form
    18,952.96/26,129.64 = 13,280.08/x
  3. Step 3: Cross multiply
    18,952.96x = 26,129.64 × 13,280.08
  4. Step 4: Simplify right side
    18,952.96x = 347,003,709.57
  5. Step 5: Solve for x
    x = 347,003,709.57/18,952.96
  6. Step 6: Final answer
    x = 18,308.68

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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.