Home / 26,640.47-39,946.71-7,917.91

Finding the Fourth Proportional to 26,640.47, 39,946.71 and 7,917.91

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Solution

The fourth proportional to 26,640.47, 39,946.71 and 7,917.91 is: 11,872.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.47 : 39,946.71 = 7,917.91 : x
  2. Step 2: Convert to fraction form
    26,640.47/39,946.71 = 7,917.91/x
  3. Step 3: Cross multiply
    26,640.47x = 39,946.71 × 7,917.91
  4. Step 4: Simplify right side
    26,640.47x = 316,294,454.58
  5. Step 5: Solve for x
    x = 316,294,454.58/26,640.47
  6. Step 6: Final answer
    x = 11,872.71

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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.