Home / 26,103.10-39,089.85-20,919.10

Finding the Fourth Proportional to 26,103.10, 39,089.85 and 20,919.10

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Solution

The fourth proportional to 26,103.10, 39,089.85 and 20,919.10 is: 31,326.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,103.10 : 39,089.85 = 20,919.10 : x
  2. Step 2: Convert to fraction form
    26,103.10/39,089.85 = 20,919.10/x
  3. Step 3: Cross multiply
    26,103.10x = 39,089.85 × 20,919.10
  4. Step 4: Simplify right side
    26,103.10x = 817,724,481.14
  5. Step 5: Solve for x
    x = 817,724,481.14/26,103.10
  6. Step 6: Final answer
    x = 31,326.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.