Home / 21,938.41-30,264.29-14,381.41

Finding the Fourth Proportional to 21,938.41, 30,264.29 and 14,381.41

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Solution

The fourth proportional to 21,938.41, 30,264.29 and 14,381.41 is: 19,839.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.41 : 30,264.29 = 14,381.41 : x
  2. Step 2: Convert to fraction form
    21,938.41/30,264.29 = 14,381.41/x
  3. Step 3: Cross multiply
    21,938.41x = 30,264.29 × 14,381.41
  4. Step 4: Simplify right side
    21,938.41x = 435,243,162.85
  5. Step 5: Solve for x
    x = 435,243,162.85/21,938.41
  6. Step 6: Final answer
    x = 19,839.32

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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.