Home / 18,889.20-28,334.81-5,740.57

Finding the Fourth Proportional to 18,889.20, 28,334.81 and 5,740.57

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Solution

The fourth proportional to 18,889.20, 28,334.81 and 5,740.57 is: 8,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.20 : 28,334.81 = 5,740.57 : x
  2. Step 2: Convert to fraction form
    18,889.20/28,334.81 = 5,740.57/x
  3. Step 3: Cross multiply
    18,889.20x = 28,334.81 × 5,740.57
  4. Step 4: Simplify right side
    18,889.20x = 162,657,789.86
  5. Step 5: Solve for x
    x = 162,657,789.86/18,889.20
  6. Step 6: Final answer
    x = 8,611.16

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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.