Home / 20,648.55-30,974-5,856.30

Finding the Fourth Proportional to 20,648.55, 30,974 and 5,856.30

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Solution

The fourth proportional to 20,648.55, 30,974 and 5,856.30 is: 8,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.55 : 30,974 = 5,856.30 : x
  2. Step 2: Convert to fraction form
    20,648.55/30,974 = 5,856.30/x
  3. Step 3: Cross multiply
    20,648.55x = 30,974 × 5,856.30
  4. Step 4: Simplify right side
    20,648.55x = 181,392,958.77
  5. Step 5: Solve for x
    x = 181,392,958.77/20,648.55
  6. Step 6: Final answer
    x = 8,784.78

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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.