Home / 9,839.76-13,578-5,590.56

Finding the Fourth Proportional to 9,839.76, 13,578 and 5,590.56

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Solution

The fourth proportional to 9,839.76, 13,578 and 5,590.56 is: 7,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,839.76 : 13,578 = 5,590.56 : x
  2. Step 2: Convert to fraction form
    9,839.76/13,578 = 5,590.56/x
  3. Step 3: Cross multiply
    9,839.76x = 13,578 × 5,590.56
  4. Step 4: Simplify right side
    9,839.76x = 75,908,623.68
  5. Step 5: Solve for x
    x = 75,908,623.68/9,839.76
  6. Step 6: Final answer
    x = 7,714.48

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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.