Home / 31,910.60-44,042.74-21,136.52

Finding the Fourth Proportional to 31,910.60, 44,042.74 and 21,136.52

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Solution

The fourth proportional to 31,910.60, 44,042.74 and 21,136.52 is: 29,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,910.60 : 44,042.74 = 21,136.52 : x
  2. Step 2: Convert to fraction form
    31,910.60/44,042.74 = 21,136.52/x
  3. Step 3: Cross multiply
    31,910.60x = 44,042.74 × 21,136.52
  4. Step 4: Simplify right side
    31,910.60x = 930,910,254.86
  5. Step 5: Solve for x
    x = 930,910,254.86/31,910.60
  6. Step 6: Final answer
    x = 29,172.45

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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.