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Finding the Fourth Proportional to 16,690.22, 23,035.08 and 9,520.16

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Solution

The fourth proportional to 16,690.22, 23,035.08 and 9,520.16 is: 13,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.22 : 23,035.08 = 9,520.16 : x
  2. Step 2: Convert to fraction form
    16,690.22/23,035.08 = 9,520.16/x
  3. Step 3: Cross multiply
    16,690.22x = 23,035.08 × 9,520.16
  4. Step 4: Simplify right side
    16,690.22x = 219,297,567.74
  5. Step 5: Solve for x
    x = 219,297,567.74/16,690.22
  6. Step 6: Final answer
    x = 13,139.29

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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.