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Finding the Fourth Proportional to 20,393.64, 30,600.99 and 8,703.72

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Solution

The fourth proportional to 20,393.64, 30,600.99 and 8,703.72 is: 13,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.64 : 30,600.99 = 8,703.72 : x
  2. Step 2: Convert to fraction form
    20,393.64/30,600.99 = 8,703.72/x
  3. Step 3: Cross multiply
    20,393.64x = 30,600.99 × 8,703.72
  4. Step 4: Simplify right side
    20,393.64x = 266,342,448.68
  5. Step 5: Solve for x
    x = 266,342,448.68/20,393.64
  6. Step 6: Final answer
    x = 13,060.07

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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.