Home / 18,955.12-26,157.68-10,998.12

Finding the Fourth Proportional to 18,955.12, 26,157.68 and 10,998.12

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Solution

The fourth proportional to 18,955.12, 26,157.68 and 10,998.12 is: 15,177.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.12 : 26,157.68 = 10,998.12 : x
  2. Step 2: Convert to fraction form
    18,955.12/26,157.68 = 10,998.12/x
  3. Step 3: Cross multiply
    18,955.12x = 26,157.68 × 10,998.12
  4. Step 4: Simplify right side
    18,955.12x = 287,685,303.56
  5. Step 5: Solve for x
    x = 287,685,303.56/18,955.12
  6. Step 6: Final answer
    x = 15,177.18

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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.