Home / 21,172.77-31,759.16-5,590.53

Finding the Fourth Proportional to 21,172.77, 31,759.16 and 5,590.53

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Solution

The fourth proportional to 21,172.77, 31,759.16 and 5,590.53 is: 8,385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.77 : 31,759.16 = 5,590.53 : x
  2. Step 2: Convert to fraction form
    21,172.77/31,759.16 = 5,590.53/x
  3. Step 3: Cross multiply
    21,172.77x = 31,759.16 × 5,590.53
  4. Step 4: Simplify right side
    21,172.77x = 177,550,508.80
  5. Step 5: Solve for x
    x = 177,550,508.80/21,172.77
  6. Step 6: Final answer
    x = 8,385.80

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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.