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Finding the Fourth Proportional to 15,652.71, 21,600.41 and 8,578.98

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Solution

The fourth proportional to 15,652.71, 21,600.41 and 8,578.98 is: 11,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,652.71 : 21,600.41 = 8,578.98 : x
  2. Step 2: Convert to fraction form
    15,652.71/21,600.41 = 8,578.98/x
  3. Step 3: Cross multiply
    15,652.71x = 21,600.41 × 8,578.98
  4. Step 4: Simplify right side
    15,652.71x = 185,309,442.49
  5. Step 5: Solve for x
    x = 185,309,442.49/15,652.71
  6. Step 6: Final answer
    x = 11,838.81

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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.