Home / 20,937.76-31,440.47-13,833.43

Finding the Fourth Proportional to 20,937.76, 31,440.47 and 13,833.43

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Solution

The fourth proportional to 20,937.76, 31,440.47 and 13,833.43 is: 20,772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.76 : 31,440.47 = 13,833.43 : x
  2. Step 2: Convert to fraction form
    20,937.76/31,440.47 = 13,833.43/x
  3. Step 3: Cross multiply
    20,937.76x = 31,440.47 × 13,833.43
  4. Step 4: Simplify right side
    20,937.76x = 434,929,393.14
  5. Step 5: Solve for x
    x = 434,929,393.14/20,937.76
  6. Step 6: Final answer
    x = 20,772.49

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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.