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Finding the Fourth Proportional to 21,655.40, 32,483.03 and 8,498.57

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Solution

The fourth proportional to 21,655.40, 32,483.03 and 8,498.57 is: 12,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.40 : 32,483.03 = 8,498.57 : x
  2. Step 2: Convert to fraction form
    21,655.40/32,483.03 = 8,498.57/x
  3. Step 3: Cross multiply
    21,655.40x = 32,483.03 × 8,498.57
  4. Step 4: Simplify right side
    21,655.40x = 276,059,163.10
  5. Step 5: Solve for x
    x = 276,059,163.10/21,655.40
  6. Step 6: Final answer
    x = 12,747.82

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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.