Home / 26,139.24-39,154.64-12,771.88

Finding the Fourth Proportional to 26,139.24, 39,154.64 and 12,771.88

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Solution

The fourth proportional to 26,139.24, 39,154.64 and 12,771.88 is: 19,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,139.24 : 39,154.64 = 12,771.88 : x
  2. Step 2: Convert to fraction form
    26,139.24/39,154.64 = 12,771.88/x
  3. Step 3: Cross multiply
    26,139.24x = 39,154.64 × 12,771.88
  4. Step 4: Simplify right side
    26,139.24x = 500,078,363.52
  5. Step 5: Solve for x
    x = 500,078,363.52/26,139.24
  6. Step 6: Final answer
    x = 19,131.33

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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.