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Finding the Fourth Proportional to 21,745.71, 32,608.04 and 10,639.40

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Solution

The fourth proportional to 21,745.71, 32,608.04 and 10,639.40 is: 15,953.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,745.71 : 32,608.04 = 10,639.40 : x
  2. Step 2: Convert to fraction form
    21,745.71/32,608.04 = 10,639.40/x
  3. Step 3: Cross multiply
    21,745.71x = 32,608.04 × 10,639.40
  4. Step 4: Simplify right side
    21,745.71x = 346,929,764.54
  5. Step 5: Solve for x
    x = 346,929,764.54/21,745.71
  6. Step 6: Final answer
    x = 15,953.94

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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.