Home / 26,405.96-36,436.76-15,791.72

Finding the Fourth Proportional to 26,405.96, 36,436.76 and 15,791.72

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Solution

The fourth proportional to 26,405.96, 36,436.76 and 15,791.72 is: 21,790.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,405.96 : 36,436.76 = 15,791.72 : x
  2. Step 2: Convert to fraction form
    26,405.96/36,436.76 = 15,791.72/x
  3. Step 3: Cross multiply
    26,405.96x = 36,436.76 × 15,791.72
  4. Step 4: Simplify right side
    26,405.96x = 575,399,111.63
  5. Step 5: Solve for x
    x = 575,399,111.63/26,405.96
  6. Step 6: Final answer
    x = 21,790.50

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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.