Home / 20,493.27-30,758.13-10,639.35

Finding the Fourth Proportional to 20,493.27, 30,758.13 and 10,639.35

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Solution

The fourth proportional to 20,493.27, 30,758.13 and 10,639.35 is: 15,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.27 : 30,758.13 = 10,639.35 : x
  2. Step 2: Convert to fraction form
    20,493.27/30,758.13 = 10,639.35/x
  3. Step 3: Cross multiply
    20,493.27x = 30,758.13 × 10,639.35
  4. Step 4: Simplify right side
    20,493.27x = 327,246,510.42
  5. Step 5: Solve for x
    x = 327,246,510.42/20,493.27
  6. Step 6: Final answer
    x = 15,968.49

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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.