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Finding the Fourth Proportional to 21,898.14, 32,863.06 and 8,754.28

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Solution

The fourth proportional to 21,898.14, 32,863.06 and 8,754.28 is: 13,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.14 : 32,863.06 = 8,754.28 : x
  2. Step 2: Convert to fraction form
    21,898.14/32,863.06 = 8,754.28/x
  3. Step 3: Cross multiply
    21,898.14x = 32,863.06 × 8,754.28
  4. Step 4: Simplify right side
    21,898.14x = 287,692,428.90
  5. Step 5: Solve for x
    x = 287,692,428.90/21,898.14
  6. Step 6: Final answer
    x = 13,137.76

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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.