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Finding the Fourth Proportional to 15,808.90, 21,816.92 and 9,094.53

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Solution

The fourth proportional to 15,808.90, 21,816.92 and 9,094.53 is: 12,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.90 : 21,816.92 = 9,094.53 : x
  2. Step 2: Convert to fraction form
    15,808.90/21,816.92 = 9,094.53/x
  3. Step 3: Cross multiply
    15,808.90x = 21,816.92 × 9,094.53
  4. Step 4: Simplify right side
    15,808.90x = 198,414,633.45
  5. Step 5: Solve for x
    x = 198,414,633.45/15,808.90
  6. Step 6: Final answer
    x = 12,550.82

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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.