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Finding the Fourth Proportional to 15,774.99, 23,677.07 and 7,989.27

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Solution

The fourth proportional to 15,774.99, 23,677.07 and 7,989.27 is: 11,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.99 : 23,677.07 = 7,989.27 : x
  2. Step 2: Convert to fraction form
    15,774.99/23,677.07 = 7,989.27/x
  3. Step 3: Cross multiply
    15,774.99x = 23,677.07 × 7,989.27
  4. Step 4: Simplify right side
    15,774.99x = 189,162,465.09
  5. Step 5: Solve for x
    x = 189,162,465.09/15,774.99
  6. Step 6: Final answer
    x = 11,991.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.