Home / 18,935.19-26,120.70-10,974.51

Finding the Fourth Proportional to 18,935.19, 26,120.70 and 10,974.51

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Solution

The fourth proportional to 18,935.19, 26,120.70 and 10,974.51 is: 15,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.19 : 26,120.70 = 10,974.51 : x
  2. Step 2: Convert to fraction form
    18,935.19/26,120.70 = 10,974.51/x
  3. Step 3: Cross multiply
    18,935.19x = 26,120.70 × 10,974.51
  4. Step 4: Simplify right side
    18,935.19x = 286,661,883.36
  5. Step 5: Solve for x
    x = 286,661,883.36/18,935.19
  6. Step 6: Final answer
    x = 15,139.11

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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.