Home / 20,371.45-30,557.20-5,580.50

Finding the Fourth Proportional to 20,371.45, 30,557.20 and 5,580.50

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Solution

The fourth proportional to 20,371.45, 30,557.20 and 5,580.50 is: 8,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.45 : 30,557.20 = 5,580.50 : x
  2. Step 2: Convert to fraction form
    20,371.45/30,557.20 = 5,580.50/x
  3. Step 3: Cross multiply
    20,371.45x = 30,557.20 × 5,580.50
  4. Step 4: Simplify right side
    20,371.45x = 170,524,301.81
  5. Step 5: Solve for x
    x = 170,524,301.81/20,371.45
  6. Step 6: Final answer
    x = 8,370.75

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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.