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Finding the Fourth Proportional to 21,603.66, 32,410.28 and 9,134.34

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Solution

The fourth proportional to 21,603.66, 32,410.28 and 9,134.34 is: 13,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.66 : 32,410.28 = 9,134.34 : x
  2. Step 2: Convert to fraction form
    21,603.66/32,410.28 = 9,134.34/x
  3. Step 3: Cross multiply
    21,603.66x = 32,410.28 × 9,134.34
  4. Step 4: Simplify right side
    21,603.66x = 296,046,627.14
  5. Step 5: Solve for x
    x = 296,046,627.14/21,603.66
  6. Step 6: Final answer
    x = 13,703.54

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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.