Home / 16,385.20-22,611.68-9,579.64

Finding the Fourth Proportional to 16,385.20, 22,611.68 and 9,579.64

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Solution

The fourth proportional to 16,385.20, 22,611.68 and 9,579.64 is: 13,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,385.20 : 22,611.68 = 9,579.64 : x
  2. Step 2: Convert to fraction form
    16,385.20/22,611.68 = 9,579.64/x
  3. Step 3: Cross multiply
    16,385.20x = 22,611.68 × 9,579.64
  4. Step 4: Simplify right side
    16,385.20x = 216,611,754.20
  5. Step 5: Solve for x
    x = 216,611,754.20/16,385.20
  6. Step 6: Final answer
    x = 13,219.96

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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.