Home / 25,579.43-38,405.04-13,108.40

Finding the Fourth Proportional to 25,579.43, 38,405.04 and 13,108.40

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Solution

The fourth proportional to 25,579.43, 38,405.04 and 13,108.40 is: 19,680.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,579.43 : 38,405.04 = 13,108.40 : x
  2. Step 2: Convert to fraction form
    25,579.43/38,405.04 = 13,108.40/x
  3. Step 3: Cross multiply
    25,579.43x = 38,405.04 × 13,108.40
  4. Step 4: Simplify right side
    25,579.43x = 503,428,529.17
  5. Step 5: Solve for x
    x = 503,428,529.17/25,579.43
  6. Step 6: Final answer
    x = 19,680.99

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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.