Home / 21,722.63-29,960.82-15,019.47

Finding the Fourth Proportional to 21,722.63, 29,960.82 and 15,019.47

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Solution

The fourth proportional to 21,722.63, 29,960.82 and 15,019.47 is: 20,715.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.63 : 29,960.82 = 15,019.47 : x
  2. Step 2: Convert to fraction form
    21,722.63/29,960.82 = 15,019.47/x
  3. Step 3: Cross multiply
    21,722.63x = 29,960.82 × 15,019.47
  4. Step 4: Simplify right side
    21,722.63x = 449,995,637.17
  5. Step 5: Solve for x
    x = 449,995,637.17/21,722.63
  6. Step 6: Final answer
    x = 20,715.53

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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.