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Finding the Fourth Proportional to 14,331.60, 21,500.60 and 11,221.20

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Solution

The fourth proportional to 14,331.60, 21,500.60 and 11,221.20 is: 16,834.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,331.60 : 21,500.60 = 11,221.20 : x
  2. Step 2: Convert to fraction form
    14,331.60/21,500.60 = 11,221.20/x
  3. Step 3: Cross multiply
    14,331.60x = 21,500.60 × 11,221.20
  4. Step 4: Simplify right side
    14,331.60x = 241,262,532.72
  5. Step 5: Solve for x
    x = 241,262,532.72/14,331.60
  6. Step 6: Final answer
    x = 16,834.31

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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.