Home / 21,837.25-30,140.27-13,877.92

Finding the Fourth Proportional to 21,837.25, 30,140.27 and 13,877.92

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Solution

The fourth proportional to 21,837.25, 30,140.27 and 13,877.92 is: 19,154.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.25 : 30,140.27 = 13,877.92 : x
  2. Step 2: Convert to fraction form
    21,837.25/30,140.27 = 13,877.92/x
  3. Step 3: Cross multiply
    21,837.25x = 30,140.27 × 13,877.92
  4. Step 4: Simplify right side
    21,837.25x = 418,284,255.84
  5. Step 5: Solve for x
    x = 418,284,255.84/21,837.25
  6. Step 6: Final answer
    x = 19,154.62

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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.