Home / 13,828.08-20,723.52-7,578.72

Finding the Fourth Proportional to 13,828.08, 20,723.52 and 7,578.72

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Solution

The fourth proportional to 13,828.08, 20,723.52 and 7,578.72 is: 11,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.08 : 20,723.52 = 7,578.72 : x
  2. Step 2: Convert to fraction form
    13,828.08/20,723.52 = 7,578.72/x
  3. Step 3: Cross multiply
    13,828.08x = 20,723.52 × 7,578.72
  4. Step 4: Simplify right side
    13,828.08x = 157,057,755.49
  5. Step 5: Solve for x
    x = 157,057,755.49/13,828.08
  6. Step 6: Final answer
    x = 11,357.89

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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.