Home / 26,666.36-39,986.11-8,890.84

Finding the Fourth Proportional to 26,666.36, 39,986.11 and 8,890.84

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Solution

The fourth proportional to 26,666.36, 39,986.11 and 8,890.84 is: 13,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,666.36 : 39,986.11 = 8,890.84 : x
  2. Step 2: Convert to fraction form
    26,666.36/39,986.11 = 8,890.84/x
  3. Step 3: Cross multiply
    26,666.36x = 39,986.11 × 8,890.84
  4. Step 4: Simplify right side
    26,666.36x = 355,510,004.86
  5. Step 5: Solve for x
    x = 355,510,004.86/26,666.36
  6. Step 6: Final answer
    x = 13,331.78

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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.