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Finding the Fourth Proportional to 25,321.40, 37,909.20 and 22,405.40

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Solution

The fourth proportional to 25,321.40, 37,909.20 and 22,405.40 is: 33,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.40 : 37,909.20 = 22,405.40 : x
  2. Step 2: Convert to fraction form
    25,321.40/37,909.20 = 22,405.40/x
  3. Step 3: Cross multiply
    25,321.40x = 37,909.20 × 22,405.40
  4. Step 4: Simplify right side
    25,321.40x = 849,370,789.68
  5. Step 5: Solve for x
    x = 849,370,789.68/25,321.40
  6. Step 6: Final answer
    x = 33,543.60

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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.