Home / 25,579.56-38,349.90-21,225

Finding the Fourth Proportional to 25,579.56, 38,349.90 and 21,225

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Solution

The fourth proportional to 25,579.56, 38,349.90 and 21,225 is: 31,821.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,579.56 : 38,349.90 = 21,225 : x
  2. Step 2: Convert to fraction form
    25,579.56/38,349.90 = 21,225/x
  3. Step 3: Cross multiply
    25,579.56x = 38,349.90 × 21,225
  4. Step 4: Simplify right side
    25,579.56x = 813,976,627.50
  5. Step 5: Solve for x
    x = 813,976,627.50/25,579.56
  6. Step 6: Final answer
    x = 31,821.37

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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.