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Finding the Fourth Proportional to 21,859.61, 32,760.39 and 8,704.76

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Solution

The fourth proportional to 21,859.61, 32,760.39 and 8,704.76 is: 13,045.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.61 : 32,760.39 = 8,704.76 : x
  2. Step 2: Convert to fraction form
    21,859.61/32,760.39 = 8,704.76/x
  3. Step 3: Cross multiply
    21,859.61x = 32,760.39 × 8,704.76
  4. Step 4: Simplify right side
    21,859.61x = 285,171,332.46
  5. Step 5: Solve for x
    x = 285,171,332.46/21,859.61
  6. Step 6: Final answer
    x = 13,045.58

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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.