Home / 21,172.91-31,760.71-5,590.13

Finding the Fourth Proportional to 21,172.91, 31,760.71 and 5,590.13

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Solution

The fourth proportional to 21,172.91, 31,760.71 and 5,590.13 is: 8,385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.91 : 31,760.71 = 5,590.13 : x
  2. Step 2: Convert to fraction form
    21,172.91/31,760.71 = 5,590.13/x
  3. Step 3: Cross multiply
    21,172.91x = 31,760.71 × 5,590.13
  4. Step 4: Simplify right side
    21,172.91x = 177,546,325.01
  5. Step 5: Solve for x
    x = 177,546,325.01/21,172.91
  6. Step 6: Final answer
    x = 8,385.54

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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.