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Finding the Fourth Proportional to 18,919.60, 26,107.07 and 10,960.34

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Solution

The fourth proportional to 18,919.60, 26,107.07 and 10,960.34 is: 15,124.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.60 : 26,107.07 = 10,960.34 : x
  2. Step 2: Convert to fraction form
    18,919.60/26,107.07 = 10,960.34/x
  3. Step 3: Cross multiply
    18,919.60x = 26,107.07 × 10,960.34
  4. Step 4: Simplify right side
    18,919.60x = 286,142,178.27
  5. Step 5: Solve for x
    x = 286,142,178.27/18,919.60
  6. Step 6: Final answer
    x = 15,124.12

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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.