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Finding the Fourth Proportional to 21,745.92, 32,631.21 and 9,264.63

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Solution

The fourth proportional to 21,745.92, 32,631.21 and 9,264.63 is: 13,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,745.92 : 32,631.21 = 9,264.63 : x
  2. Step 2: Convert to fraction form
    21,745.92/32,631.21 = 9,264.63/x
  3. Step 3: Cross multiply
    21,745.92x = 32,631.21 × 9,264.63
  4. Step 4: Simplify right side
    21,745.92x = 302,316,087.10
  5. Step 5: Solve for x
    x = 302,316,087.10/21,745.92
  6. Step 6: Final answer
    x = 13,902.20

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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.