Home / 18,942.10-26,112.81-13,259.32

Finding the Fourth Proportional to 18,942.10, 26,112.81 and 13,259.32

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Solution

The fourth proportional to 18,942.10, 26,112.81 and 13,259.32 is: 18,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.10 : 26,112.81 = 13,259.32 : x
  2. Step 2: Convert to fraction form
    18,942.10/26,112.81 = 13,259.32/x
  3. Step 3: Cross multiply
    18,942.10x = 26,112.81 × 13,259.32
  4. Step 4: Simplify right side
    18,942.10x = 346,238,103.89
  5. Step 5: Solve for x
    x = 346,238,103.89/18,942.10
  6. Step 6: Final answer
    x = 18,278.76

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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.