Home / 31,517.62-47,238.82-21,978.38

Finding the Fourth Proportional to 31,517.62, 47,238.82 and 21,978.38

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Solution

The fourth proportional to 31,517.62, 47,238.82 and 21,978.38 is: 32,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,517.62 : 47,238.82 = 21,978.38 : x
  2. Step 2: Convert to fraction form
    31,517.62/47,238.82 = 21,978.38/x
  3. Step 3: Cross multiply
    31,517.62x = 47,238.82 × 21,978.38
  4. Step 4: Simplify right side
    31,517.62x = 1,038,232,736.71
  5. Step 5: Solve for x
    x = 1,038,232,736.71/31,517.62
  6. Step 6: Final answer
    x = 32,941.34

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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.