Home / 20,509.21-30,758.37-8,663.14

Finding the Fourth Proportional to 20,509.21, 30,758.37 and 8,663.14

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Solution

The fourth proportional to 20,509.21, 30,758.37 and 8,663.14 is: 12,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.21 : 30,758.37 = 8,663.14 : x
  2. Step 2: Convert to fraction form
    20,509.21/30,758.37 = 8,663.14/x
  3. Step 3: Cross multiply
    20,509.21x = 30,758.37 × 8,663.14
  4. Step 4: Simplify right side
    20,509.21x = 266,464,065.48
  5. Step 5: Solve for x
    x = 266,464,065.48/20,509.21
  6. Step 6: Final answer
    x = 12,992.41

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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.