Home / 18,784.45-25,920.79-11,229.31

Finding the Fourth Proportional to 18,784.45, 25,920.79 and 11,229.31

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Solution

The fourth proportional to 18,784.45, 25,920.79 and 11,229.31 is: 15,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.45 : 25,920.79 = 11,229.31 : x
  2. Step 2: Convert to fraction form
    18,784.45/25,920.79 = 11,229.31/x
  3. Step 3: Cross multiply
    18,784.45x = 25,920.79 × 11,229.31
  4. Step 4: Simplify right side
    18,784.45x = 291,072,586.35
  5. Step 5: Solve for x
    x = 291,072,586.35/18,784.45
  6. Step 6: Final answer
    x = 15,495.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.