Home / 26,640.85-39,862.63-21,359.70

Finding the Fourth Proportional to 26,640.85, 39,862.63 and 21,359.70

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Solution

The fourth proportional to 26,640.85, 39,862.63 and 21,359.70 is: 31,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.85 : 39,862.63 = 21,359.70 : x
  2. Step 2: Convert to fraction form
    26,640.85/39,862.63 = 21,359.70/x
  3. Step 3: Cross multiply
    26,640.85x = 39,862.63 × 21,359.70
  4. Step 4: Simplify right side
    26,640.85x = 851,453,844.71
  5. Step 5: Solve for x
    x = 851,453,844.71/26,640.85
  6. Step 6: Final answer
    x = 31,960.46

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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.