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Finding the Fourth Proportional to 14,269.60, 21,404.40 and 7,708.60

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Solution

The fourth proportional to 14,269.60, 21,404.40 and 7,708.60 is: 11,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,269.60 : 21,404.40 = 7,708.60 : x
  2. Step 2: Convert to fraction form
    14,269.60/21,404.40 = 7,708.60/x
  3. Step 3: Cross multiply
    14,269.60x = 21,404.40 × 7,708.60
  4. Step 4: Simplify right side
    14,269.60x = 164,997,957.84
  5. Step 5: Solve for x
    x = 164,997,957.84/14,269.60
  6. Step 6: Final answer
    x = 11,562.90

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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.