Home / 21,235.48-31,851.38-7,195.21

Finding the Fourth Proportional to 21,235.48, 31,851.38 and 7,195.21

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Solution

The fourth proportional to 21,235.48, 31,851.38 and 7,195.21 is: 10,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.48 : 31,851.38 = 7,195.21 : x
  2. Step 2: Convert to fraction form
    21,235.48/31,851.38 = 7,195.21/x
  3. Step 3: Cross multiply
    21,235.48x = 31,851.38 × 7,195.21
  4. Step 4: Simplify right side
    21,235.48x = 229,177,367.89
  5. Step 5: Solve for x
    x = 229,177,367.89/21,235.48
  6. Step 6: Final answer
    x = 10,792.19

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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.