Home / 10,218.15-15,321.07-6,662.91

Finding the Fourth Proportional to 10,218.15, 15,321.07 and 6,662.91

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Solution

The fourth proportional to 10,218.15, 15,321.07 and 6,662.91 is: 9,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.15 : 15,321.07 = 6,662.91 : x
  2. Step 2: Convert to fraction form
    10,218.15/15,321.07 = 6,662.91/x
  3. Step 3: Cross multiply
    10,218.15x = 15,321.07 × 6,662.91
  4. Step 4: Simplify right side
    10,218.15x = 102,082,852.64
  5. Step 5: Solve for x
    x = 102,082,852.64/10,218.15
  6. Step 6: Final answer
    x = 9,990.35

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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.