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Finding the Fourth Proportional to 25,564.80, 38,368.80 and 9,993.60

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Solution

The fourth proportional to 25,564.80, 38,368.80 and 9,993.60 is: 14,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,564.80 : 38,368.80 = 9,993.60 : x
  2. Step 2: Convert to fraction form
    25,564.80/38,368.80 = 9,993.60/x
  3. Step 3: Cross multiply
    25,564.80x = 38,368.80 × 9,993.60
  4. Step 4: Simplify right side
    25,564.80x = 383,442,439.68
  5. Step 5: Solve for x
    x = 383,442,439.68/25,564.80
  6. Step 6: Final answer
    x = 14,998.84

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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.