Home / 20,791.36-31,252.72-17,904.56

Finding the Fourth Proportional to 20,791.36, 31,252.72 and 17,904.56

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Solution

The fourth proportional to 20,791.36, 31,252.72 and 17,904.56 is: 26,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.36 : 31,252.72 = 17,904.56 : x
  2. Step 2: Convert to fraction form
    20,791.36/31,252.72 = 17,904.56/x
  3. Step 3: Cross multiply
    20,791.36x = 31,252.72 × 17,904.56
  4. Step 4: Simplify right side
    20,791.36x = 559,566,200.40
  5. Step 5: Solve for x
    x = 559,566,200.40/20,791.36
  6. Step 6: Final answer
    x = 26,913.40

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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.