Home / 30,211.20-45,325.85-10,489.86

Finding the Fourth Proportional to 30,211.20, 45,325.85 and 10,489.86

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Solution

The fourth proportional to 30,211.20, 45,325.85 and 10,489.86 is: 15,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.20 : 45,325.85 = 10,489.86 : x
  2. Step 2: Convert to fraction form
    30,211.20/45,325.85 = 10,489.86/x
  3. Step 3: Cross multiply
    30,211.20x = 45,325.85 × 10,489.86
  4. Step 4: Simplify right side
    30,211.20x = 475,461,768.43
  5. Step 5: Solve for x
    x = 475,461,768.43/30,211.20
  6. Step 6: Final answer
    x = 15,737.93

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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.