Home / 30,155.17-45,200.82-10,145.61

Finding the Fourth Proportional to 30,155.17, 45,200.82 and 10,145.61

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Solution

The fourth proportional to 30,155.17, 45,200.82 and 10,145.61 is: 15,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.17 : 45,200.82 = 10,145.61 : x
  2. Step 2: Convert to fraction form
    30,155.17/45,200.82 = 10,145.61/x
  3. Step 3: Cross multiply
    30,155.17x = 45,200.82 × 10,145.61
  4. Step 4: Simplify right side
    30,155.17x = 458,589,891.40
  5. Step 5: Solve for x
    x = 458,589,891.40/30,155.17
  6. Step 6: Final answer
    x = 15,207.67

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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.