Home / 20,471.42-30,707.14-5,680.35

Finding the Fourth Proportional to 20,471.42, 30,707.14 and 5,680.35

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Solution

The fourth proportional to 20,471.42, 30,707.14 and 5,680.35 is: 8,520.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.42 : 30,707.14 = 5,680.35 : x
  2. Step 2: Convert to fraction form
    20,471.42/30,707.14 = 5,680.35/x
  3. Step 3: Cross multiply
    20,471.42x = 30,707.14 × 5,680.35
  4. Step 4: Simplify right side
    20,471.42x = 174,427,188.99
  5. Step 5: Solve for x
    x = 174,427,188.99/20,471.42
  6. Step 6: Final answer
    x = 8,520.52

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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.