Home / 26,109.81-39,178.22-12,961.89

Finding the Fourth Proportional to 26,109.81, 39,178.22 and 12,961.89

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Solution

The fourth proportional to 26,109.81, 39,178.22 and 12,961.89 is: 19,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,109.81 : 39,178.22 = 12,961.89 : x
  2. Step 2: Convert to fraction form
    26,109.81/39,178.22 = 12,961.89/x
  3. Step 3: Cross multiply
    26,109.81x = 39,178.22 × 12,961.89
  4. Step 4: Simplify right side
    26,109.81x = 507,823,713.23
  5. Step 5: Solve for x
    x = 507,823,713.23/26,109.81
  6. Step 6: Final answer
    x = 19,449.54

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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.