Home / 21,868.48-30,192.24-15,151.60

Finding the Fourth Proportional to 21,868.48, 30,192.24 and 15,151.60

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Solution

The fourth proportional to 21,868.48, 30,192.24 and 15,151.60 is: 20,918.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.48 : 30,192.24 = 15,151.60 : x
  2. Step 2: Convert to fraction form
    21,868.48/30,192.24 = 15,151.60/x
  3. Step 3: Cross multiply
    21,868.48x = 30,192.24 × 15,151.60
  4. Step 4: Simplify right side
    21,868.48x = 457,460,743.58
  5. Step 5: Solve for x
    x = 457,460,743.58/21,868.48
  6. Step 6: Final answer
    x = 20,918.73

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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.