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Finding the Fourth Proportional to 16,351.65, 22,570.11 and 9,639.45

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Solution

The fourth proportional to 16,351.65, 22,570.11 and 9,639.45 is: 13,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,351.65 : 22,570.11 = 9,639.45 : x
  2. Step 2: Convert to fraction form
    16,351.65/22,570.11 = 9,639.45/x
  3. Step 3: Cross multiply
    16,351.65x = 22,570.11 × 9,639.45
  4. Step 4: Simplify right side
    16,351.65x = 217,563,446.84
  5. Step 5: Solve for x
    x = 217,563,446.84/16,351.65
  6. Step 6: Final answer
    x = 13,305.29

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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.