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Finding the Fourth Proportional to 21,611.08, 32,415.54 and 8,465.86

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Solution

The fourth proportional to 21,611.08, 32,415.54 and 8,465.86 is: 12,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.08 : 32,415.54 = 8,465.86 : x
  2. Step 2: Convert to fraction form
    21,611.08/32,415.54 = 8,465.86/x
  3. Step 3: Cross multiply
    21,611.08x = 32,415.54 × 8,465.86
  4. Step 4: Simplify right side
    21,611.08x = 274,425,423.46
  5. Step 5: Solve for x
    x = 274,425,423.46/21,611.08
  6. Step 6: Final answer
    x = 12,698.37

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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.