Home / 21,930.43-30,267.40-14,398.61

Finding the Fourth Proportional to 21,930.43, 30,267.40 and 14,398.61

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Solution

The fourth proportional to 21,930.43, 30,267.40 and 14,398.61 is: 19,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.43 : 30,267.40 = 14,398.61 : x
  2. Step 2: Convert to fraction form
    21,930.43/30,267.40 = 14,398.61/x
  3. Step 3: Cross multiply
    21,930.43x = 30,267.40 × 14,398.61
  4. Step 4: Simplify right side
    21,930.43x = 435,808,336.98
  5. Step 5: Solve for x
    x = 435,808,336.98/21,930.43
  6. Step 6: Final answer
    x = 19,872.31

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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.