Home / 18,935.51-26,131.10-10,982.43

Finding the Fourth Proportional to 18,935.51, 26,131.10 and 10,982.43

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Solution

The fourth proportional to 18,935.51, 26,131.10 and 10,982.43 is: 15,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.51 : 26,131.10 = 10,982.43 : x
  2. Step 2: Convert to fraction form
    18,935.51/26,131.10 = 10,982.43/x
  3. Step 3: Cross multiply
    18,935.51x = 26,131.10 × 10,982.43
  4. Step 4: Simplify right side
    18,935.51x = 286,982,921.66
  5. Step 5: Solve for x
    x = 286,982,921.66/18,935.51
  6. Step 6: Final answer
    x = 15,155.81

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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.