Home / 21,901.97-30,225.32-13,403.91

Finding the Fourth Proportional to 21,901.97, 30,225.32 and 13,403.91

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Solution

The fourth proportional to 21,901.97, 30,225.32 and 13,403.91 is: 18,497.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.97 : 30,225.32 = 13,403.91 : x
  2. Step 2: Convert to fraction form
    21,901.97/30,225.32 = 13,403.91/x
  3. Step 3: Cross multiply
    21,901.97x = 30,225.32 × 13,403.91
  4. Step 4: Simplify right side
    21,901.97x = 405,137,401.98
  5. Step 5: Solve for x
    x = 405,137,401.98/21,901.97
  6. Step 6: Final answer
    x = 18,497.77

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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.