Home / 26,726.63-36,879.10-15,391.89

Finding the Fourth Proportional to 26,726.63, 36,879.10 and 15,391.89

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Solution

The fourth proportional to 26,726.63, 36,879.10 and 15,391.89 is: 21,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,726.63 : 36,879.10 = 15,391.89 : x
  2. Step 2: Convert to fraction form
    26,726.63/36,879.10 = 15,391.89/x
  3. Step 3: Cross multiply
    26,726.63x = 36,879.10 × 15,391.89
  4. Step 4: Simplify right side
    26,726.63x = 567,639,012.02
  5. Step 5: Solve for x
    x = 567,639,012.02/26,726.63
  6. Step 6: Final answer
    x = 21,238.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.