Home / 26,428.12-39,642.18-7,960.12

Finding the Fourth Proportional to 26,428.12, 39,642.18 and 7,960.12

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Solution

The fourth proportional to 26,428.12, 39,642.18 and 7,960.12 is: 11,940.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,428.12 : 39,642.18 = 7,960.12 : x
  2. Step 2: Convert to fraction form
    26,428.12/39,642.18 = 7,960.12/x
  3. Step 3: Cross multiply
    26,428.12x = 39,642.18 × 7,960.12
  4. Step 4: Simplify right side
    26,428.12x = 315,556,271.85
  5. Step 5: Solve for x
    x = 315,556,271.85/26,428.12
  6. Step 6: Final answer
    x = 11,940.17

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Half scale
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Double scale
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Similar ratio
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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.