Home / 30,163.70-45,245.55-19,666.10

Finding the Fourth Proportional to 30,163.70, 45,245.55 and 19,666.10

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Solution

The fourth proportional to 30,163.70, 45,245.55 and 19,666.10 is: 29,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,163.70 : 45,245.55 = 19,666.10 : x
  2. Step 2: Convert to fraction form
    30,163.70/45,245.55 = 19,666.10/x
  3. Step 3: Cross multiply
    30,163.70x = 45,245.55 × 19,666.10
  4. Step 4: Simplify right side
    30,163.70x = 889,803,510.86
  5. Step 5: Solve for x
    x = 889,803,510.86/30,163.70
  6. Step 6: Final answer
    x = 29,499.15

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Double scale
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Similar ratio
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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.