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Finding the Fourth Proportional to 20,475.99, 30,722.63 and 8,632.71

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Solution

The fourth proportional to 20,475.99, 30,722.63 and 8,632.71 is: 12,952.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.99 : 30,722.63 = 8,632.71 : x
  2. Step 2: Convert to fraction form
    20,475.99/30,722.63 = 8,632.71/x
  3. Step 3: Cross multiply
    20,475.99x = 30,722.63 × 8,632.71
  4. Step 4: Simplify right side
    20,475.99x = 265,219,512.06
  5. Step 5: Solve for x
    x = 265,219,512.06/20,475.99
  6. Step 6: Final answer
    x = 12,952.71

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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.