Home / 37,139.50-51,255.21-21,223.60

Finding the Fourth Proportional to 37,139.50, 51,255.21 and 21,223.60

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Solution

The fourth proportional to 37,139.50, 51,255.21 and 21,223.60 is: 29,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,139.50 : 51,255.21 = 21,223.60 : x
  2. Step 2: Convert to fraction form
    37,139.50/51,255.21 = 21,223.60/x
  3. Step 3: Cross multiply
    37,139.50x = 51,255.21 × 21,223.60
  4. Step 4: Simplify right side
    37,139.50x = 1,087,820,074.96
  5. Step 5: Solve for x
    x = 1,087,820,074.96/37,139.50
  6. Step 6: Final answer
    x = 29,290.11

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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.