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Finding the Fourth Proportional to 15,662.85, 21,614.79 and 9,375.22

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Solution

The fourth proportional to 15,662.85, 21,614.79 and 9,375.22 is: 12,937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.85 : 21,614.79 = 9,375.22 : x
  2. Step 2: Convert to fraction form
    15,662.85/21,614.79 = 9,375.22/x
  3. Step 3: Cross multiply
    15,662.85x = 21,614.79 × 9,375.22
  4. Step 4: Simplify right side
    15,662.85x = 202,643,411.50
  5. Step 5: Solve for x
    x = 202,643,411.50/15,662.85
  6. Step 6: Final answer
    x = 12,937.84

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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.