Home / 10,218.34-15,321.35-6,663.11

Finding the Fourth Proportional to 10,218.34, 15,321.35 and 6,663.11

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Solution

The fourth proportional to 10,218.34, 15,321.35 and 6,663.11 is: 9,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.34 : 15,321.35 = 6,663.11 : x
  2. Step 2: Convert to fraction form
    10,218.34/15,321.35 = 6,663.11/x
  3. Step 3: Cross multiply
    10,218.34x = 15,321.35 × 6,663.11
  4. Step 4: Simplify right side
    10,218.34x = 102,087,780.45
  5. Step 5: Solve for x
    x = 102,087,780.45/10,218.34
  6. Step 6: Final answer
    x = 9,990.64

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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.