Home / 9,990.21-13,786.53-5,514

Finding the Fourth Proportional to 9,990.21, 13,786.53 and 5,514

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Solution

The fourth proportional to 9,990.21, 13,786.53 and 5,514 is: 7,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.21 : 13,786.53 = 5,514 : x
  2. Step 2: Convert to fraction form
    9,990.21/13,786.53 = 5,514/x
  3. Step 3: Cross multiply
    9,990.21x = 13,786.53 × 5,514
  4. Step 4: Simplify right side
    9,990.21x = 76,018,926.42
  5. Step 5: Solve for x
    x = 76,018,926.42/9,990.21
  6. Step 6: Final answer
    x = 7,609.34

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Double scale
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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.