Home / 21,435.39-29,561.49-17,862.21

Finding the Fourth Proportional to 21,435.39, 29,561.49 and 17,862.21

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Solution

The fourth proportional to 21,435.39, 29,561.49 and 17,862.21 is: 24,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.39 : 29,561.49 = 17,862.21 : x
  2. Step 2: Convert to fraction form
    21,435.39/29,561.49 = 17,862.21/x
  3. Step 3: Cross multiply
    21,435.39x = 29,561.49 × 17,862.21
  4. Step 4: Simplify right side
    21,435.39x = 528,033,542.29
  5. Step 5: Solve for x
    x = 528,033,542.29/21,435.39
  6. Step 6: Final answer
    x = 24,633.73

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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.