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Finding the Fourth Proportional to 16,415.12, 22,651.08 and 9,340.88

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Solution

The fourth proportional to 16,415.12, 22,651.08 and 9,340.88 is: 12,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,415.12 : 22,651.08 = 9,340.88 : x
  2. Step 2: Convert to fraction form
    16,415.12/22,651.08 = 9,340.88/x
  3. Step 3: Cross multiply
    16,415.12x = 22,651.08 × 9,340.88
  4. Step 4: Simplify right side
    16,415.12x = 211,581,020.15
  5. Step 5: Solve for x
    x = 211,581,020.15/16,415.12
  6. Step 6: Final answer
    x = 12,889.40

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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.