Home / 20,079.27-30,132.72-6,931.64

Finding the Fourth Proportional to 20,079.27, 30,132.72 and 6,931.64

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Solution

The fourth proportional to 20,079.27, 30,132.72 and 6,931.64 is: 10,402.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.27 : 30,132.72 = 6,931.64 : x
  2. Step 2: Convert to fraction form
    20,079.27/30,132.72 = 6,931.64/x
  3. Step 3: Cross multiply
    20,079.27x = 30,132.72 × 6,931.64
  4. Step 4: Simplify right side
    20,079.27x = 208,869,242.59
  5. Step 5: Solve for x
    x = 208,869,242.59/20,079.27
  6. Step 6: Final answer
    x = 10,402.23

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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.