Home / 18,936.56-26,131.74-10,979.12

Finding the Fourth Proportional to 18,936.56, 26,131.74 and 10,979.12

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Solution

The fourth proportional to 18,936.56, 26,131.74 and 10,979.12 is: 15,150.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.56 : 26,131.74 = 10,979.12 : x
  2. Step 2: Convert to fraction form
    18,936.56/26,131.74 = 10,979.12/x
  3. Step 3: Cross multiply
    18,936.56x = 26,131.74 × 10,979.12
  4. Step 4: Simplify right side
    18,936.56x = 286,903,509.27
  5. Step 5: Solve for x
    x = 286,903,509.27/18,936.56
  6. Step 6: Final answer
    x = 15,150.77

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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.