Home / 26,139.40-39,186.06-12,305.16

Finding the Fourth Proportional to 26,139.40, 39,186.06 and 12,305.16

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Solution

The fourth proportional to 26,139.40, 39,186.06 and 12,305.16 is: 18,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,139.40 : 39,186.06 = 12,305.16 : x
  2. Step 2: Convert to fraction form
    26,139.40/39,186.06 = 12,305.16/x
  3. Step 3: Cross multiply
    26,139.40x = 39,186.06 × 12,305.16
  4. Step 4: Simplify right side
    26,139.40x = 482,190,738.07
  5. Step 5: Solve for x
    x = 482,190,738.07/26,139.40
  6. Step 6: Final answer
    x = 18,446.89

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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.