Home / 26,390.78-39,588.76-7,670.97

Finding the Fourth Proportional to 26,390.78, 39,588.76 and 7,670.97

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Solution

The fourth proportional to 26,390.78, 39,588.76 and 7,670.97 is: 11,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,390.78 : 39,588.76 = 7,670.97 : x
  2. Step 2: Convert to fraction form
    26,390.78/39,588.76 = 7,670.97/x
  3. Step 3: Cross multiply
    26,390.78x = 39,588.76 × 7,670.97
  4. Step 4: Simplify right side
    26,390.78x = 303,684,190.30
  5. Step 5: Solve for x
    x = 303,684,190.30/26,390.78
  6. Step 6: Final answer
    x = 11,507.21

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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.