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Finding the Fourth Proportional to 15,696, 21,652.86 and 10,395.27

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Solution

The fourth proportional to 15,696, 21,652.86 and 10,395.27 is: 14,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696 : 21,652.86 = 10,395.27 : x
  2. Step 2: Convert to fraction form
    15,696/21,652.86 = 10,395.27/x
  3. Step 3: Cross multiply
    15,696x = 21,652.86 × 10,395.27
  4. Step 4: Simplify right side
    15,696x = 225,087,325.97
  5. Step 5: Solve for x
    x = 225,087,325.97/15,696
  6. Step 6: Final answer
    x = 14,340.43

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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.