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Finding the Fourth Proportional to 25,108.40, 37,619.40 and 21,220.40

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Solution

The fourth proportional to 25,108.40, 37,619.40 and 21,220.40 is: 31,794.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,108.40 : 37,619.40 = 21,220.40 : x
  2. Step 2: Convert to fraction form
    25,108.40/37,619.40 = 21,220.40/x
  3. Step 3: Cross multiply
    25,108.40x = 37,619.40 × 21,220.40
  4. Step 4: Simplify right side
    25,108.40x = 798,298,715.76
  5. Step 5: Solve for x
    x = 798,298,715.76/25,108.40
  6. Step 6: Final answer
    x = 31,794.09

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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.