Home / 21,880.48-30,142.38-17,402.80

Finding the Fourth Proportional to 21,880.48, 30,142.38 and 17,402.80

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Solution

The fourth proportional to 21,880.48, 30,142.38 and 17,402.80 is: 23,973.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.48 : 30,142.38 = 17,402.80 : x
  2. Step 2: Convert to fraction form
    21,880.48/30,142.38 = 17,402.80/x
  3. Step 3: Cross multiply
    21,880.48x = 30,142.38 × 17,402.80
  4. Step 4: Simplify right side
    21,880.48x = 524,561,810.66
  5. Step 5: Solve for x
    x = 524,561,810.66/21,880.48
  6. Step 6: Final answer
    x = 23,973.96

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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.