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Finding the Fourth Proportional to 15,672.77, 23,513.05 and 7,778.99

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Solution

The fourth proportional to 15,672.77, 23,513.05 and 7,778.99 is: 11,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.77 : 23,513.05 = 7,778.99 : x
  2. Step 2: Convert to fraction form
    15,672.77/23,513.05 = 7,778.99/x
  3. Step 3: Cross multiply
    15,672.77x = 23,513.05 × 7,778.99
  4. Step 4: Simplify right side
    15,672.77x = 182,907,820.15
  5. Step 5: Solve for x
    x = 182,907,820.15/15,672.77
  6. Step 6: Final answer
    x = 11,670.42

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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.