Home / 30,288.45-45,432.66-8,101.25

Finding the Fourth Proportional to 30,288.45, 45,432.66 and 8,101.25

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Solution

The fourth proportional to 30,288.45, 45,432.66 and 8,101.25 is: 12,151.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,288.45 : 45,432.66 = 8,101.25 : x
  2. Step 2: Convert to fraction form
    30,288.45/45,432.66 = 8,101.25/x
  3. Step 3: Cross multiply
    30,288.45x = 45,432.66 × 8,101.25
  4. Step 4: Simplify right side
    30,288.45x = 368,061,336.83
  5. Step 5: Solve for x
    x = 368,061,336.83/30,288.45
  6. Step 6: Final answer
    x = 12,151.87

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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.