Home / 20,471.87-30,707.85-6,240.47

Finding the Fourth Proportional to 20,471.87, 30,707.85 and 6,240.47

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Solution

The fourth proportional to 20,471.87, 30,707.85 and 6,240.47 is: 9,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.87 : 30,707.85 = 6,240.47 : x
  2. Step 2: Convert to fraction form
    20,471.87/30,707.85 = 6,240.47/x
  3. Step 3: Cross multiply
    20,471.87x = 30,707.85 × 6,240.47
  4. Step 4: Simplify right side
    20,471.87x = 191,631,416.69
  5. Step 5: Solve for x
    x = 191,631,416.69/20,471.87
  6. Step 6: Final answer
    x = 9,360.72

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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.