Home / 21,860.48-30,114.78-17,382.80

Finding the Fourth Proportional to 21,860.48, 30,114.78 and 17,382.80

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Solution

The fourth proportional to 21,860.48, 30,114.78 and 17,382.80 is: 23,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.48 : 30,114.78 = 17,382.80 : x
  2. Step 2: Convert to fraction form
    21,860.48/30,114.78 = 17,382.80/x
  3. Step 3: Cross multiply
    21,860.48x = 30,114.78 × 17,382.80
  4. Step 4: Simplify right side
    21,860.48x = 523,479,197.78
  5. Step 5: Solve for x
    x = 523,479,197.78/21,860.48
  6. Step 6: Final answer
    x = 23,946.37

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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.