Home / 21,884.48-30,147.90-17,406.80

Finding the Fourth Proportional to 21,884.48, 30,147.90 and 17,406.80

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Solution

The fourth proportional to 21,884.48, 30,147.90 and 17,406.80 is: 23,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,884.48 : 30,147.90 = 17,406.80 : x
  2. Step 2: Convert to fraction form
    21,884.48/30,147.90 = 17,406.80/x
  3. Step 3: Cross multiply
    21,884.48x = 30,147.90 × 17,406.80
  4. Step 4: Simplify right side
    21,884.48x = 524,778,465.72
  5. Step 5: Solve for x
    x = 524,778,465.72/21,884.48
  6. Step 6: Final answer
    x = 23,979.48

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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.