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Finding the Fourth Proportional to 21,371.60, 32,057.10 and 9,684.80

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Solution

The fourth proportional to 21,371.60, 32,057.10 and 9,684.80 is: 14,527.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.60 : 32,057.10 = 9,684.80 : x
  2. Step 2: Convert to fraction form
    21,371.60/32,057.10 = 9,684.80/x
  3. Step 3: Cross multiply
    21,371.60x = 32,057.10 × 9,684.80
  4. Step 4: Simplify right side
    21,371.60x = 310,466,602.08
  5. Step 5: Solve for x
    x = 310,466,602.08/21,371.60
  6. Step 6: Final answer
    x = 14,527.06

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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.