Home / 26,640.93-39,961.38-7,920.89

Finding the Fourth Proportional to 26,640.93, 39,961.38 and 7,920.89

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Solution

The fourth proportional to 26,640.93, 39,961.38 and 7,920.89 is: 11,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.93 : 39,961.38 = 7,920.89 : x
  2. Step 2: Convert to fraction form
    26,640.93/39,961.38 = 7,920.89/x
  3. Step 3: Cross multiply
    26,640.93x = 39,961.38 × 7,920.89
  4. Step 4: Simplify right side
    26,640.93x = 316,529,495.42
  5. Step 5: Solve for x
    x = 316,529,495.42/26,640.93
  6. Step 6: Final answer
    x = 11,881.32

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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.