Home / 21,862.73-30,175.36-13,903.40

Finding the Fourth Proportional to 21,862.73, 30,175.36 and 13,903.40

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Solution

The fourth proportional to 21,862.73, 30,175.36 and 13,903.40 is: 19,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.73 : 30,175.36 = 13,903.40 : x
  2. Step 2: Convert to fraction form
    21,862.73/30,175.36 = 13,903.40/x
  3. Step 3: Cross multiply
    21,862.73x = 30,175.36 × 13,903.40
  4. Step 4: Simplify right side
    21,862.73x = 419,540,140.90
  5. Step 5: Solve for x
    x = 419,540,140.90/21,862.73
  6. Step 6: Final answer
    x = 19,189.74

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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.