Home / 18,936.14-26,130.94-10,980.96

Finding the Fourth Proportional to 18,936.14, 26,130.94 and 10,980.96

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Solution

The fourth proportional to 18,936.14, 26,130.94 and 10,980.96 is: 15,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.14 : 26,130.94 = 10,980.96 : x
  2. Step 2: Convert to fraction form
    18,936.14/26,130.94 = 10,980.96/x
  3. Step 3: Cross multiply
    18,936.14x = 26,130.94 × 10,980.96
  4. Step 4: Simplify right side
    18,936.14x = 286,942,806.90
  5. Step 5: Solve for x
    x = 286,942,806.90/18,936.14
  6. Step 6: Final answer
    x = 15,153.18

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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.