Home / 18,947.12-26,147.14-10,994.08

Finding the Fourth Proportional to 18,947.12, 26,147.14 and 10,994.08

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Solution

The fourth proportional to 18,947.12, 26,147.14 and 10,994.08 is: 15,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.12 : 26,147.14 = 10,994.08 : x
  2. Step 2: Convert to fraction form
    18,947.12/26,147.14 = 10,994.08/x
  3. Step 3: Cross multiply
    18,947.12x = 26,147.14 × 10,994.08
  4. Step 4: Simplify right side
    18,947.12x = 287,463,748.93
  5. Step 5: Solve for x
    x = 287,463,748.93/18,947.12
  6. Step 6: Final answer
    x = 15,171.90

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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.