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Finding the Fourth Proportional to 21,661.59, 32,492.58 and 7,621.73

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Solution

The fourth proportional to 21,661.59, 32,492.58 and 7,621.73 is: 11,432.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.59 : 32,492.58 = 7,621.73 : x
  2. Step 2: Convert to fraction form
    21,661.59/32,492.58 = 7,621.73/x
  3. Step 3: Cross multiply
    21,661.59x = 32,492.58 × 7,621.73
  4. Step 4: Simplify right side
    21,661.59x = 247,649,671.76
  5. Step 5: Solve for x
    x = 247,649,671.76/21,661.59
  6. Step 6: Final answer
    x = 11,432.66

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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.