Home / 21,943.31-30,264.55-18,923.43

Finding the Fourth Proportional to 21,943.31, 30,264.55 and 18,923.43

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Solution

The fourth proportional to 21,943.31, 30,264.55 and 18,923.43 is: 26,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.31 : 30,264.55 = 18,923.43 : x
  2. Step 2: Convert to fraction form
    21,943.31/30,264.55 = 18,923.43/x
  3. Step 3: Cross multiply
    21,943.31x = 30,264.55 × 18,923.43
  4. Step 4: Simplify right side
    21,943.31x = 572,709,093.41
  5. Step 5: Solve for x
    x = 572,709,093.41/21,943.31
  6. Step 6: Final answer
    x = 26,099.49

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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.