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Finding the Fourth Proportional to 13,178.60, 18,193.08 and 10,187.68

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Solution

The fourth proportional to 13,178.60, 18,193.08 and 10,187.68 is: 14,064.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.60 : 18,193.08 = 10,187.68 : x
  2. Step 2: Convert to fraction form
    13,178.60/18,193.08 = 10,187.68/x
  3. Step 3: Cross multiply
    13,178.60x = 18,193.08 × 10,187.68
  4. Step 4: Simplify right side
    13,178.60x = 185,345,277.25
  5. Step 5: Solve for x
    x = 185,345,277.25/13,178.60
  6. Step 6: Final answer
    x = 14,064.11

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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.