Home / 16,205.70-22,357.29-9,921.72

Finding the Fourth Proportional to 16,205.70, 22,357.29 and 9,921.72

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Solution

The fourth proportional to 16,205.70, 22,357.29 and 9,921.72 is: 13,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,205.70 : 22,357.29 = 9,921.72 : x
  2. Step 2: Convert to fraction form
    16,205.70/22,357.29 = 9,921.72/x
  3. Step 3: Cross multiply
    16,205.70x = 22,357.29 × 9,921.72
  4. Step 4: Simplify right side
    16,205.70x = 221,822,771.34
  5. Step 5: Solve for x
    x = 221,822,771.34/16,205.70
  6. Step 6: Final answer
    x = 13,687.95

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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.