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Finding the Fourth Proportional to 20,476.68, 30,713.74 and 10,079.24

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Solution

The fourth proportional to 20,476.68, 30,713.74 and 10,079.24 is: 15,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.68 : 30,713.74 = 10,079.24 : x
  2. Step 2: Convert to fraction form
    20,476.68/30,713.74 = 10,079.24/x
  3. Step 3: Cross multiply
    20,476.68x = 30,713.74 × 10,079.24
  4. Step 4: Simplify right side
    20,476.68x = 309,571,156.76
  5. Step 5: Solve for x
    x = 309,571,156.76/20,476.68
  6. Step 6: Final answer
    x = 15,118.23

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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.