Home / 20,070.28-30,103.26-6,921.64

Finding the Fourth Proportional to 20,070.28, 30,103.26 and 6,921.64

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Solution

The fourth proportional to 20,070.28, 30,103.26 and 6,921.64 is: 10,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.28 : 30,103.26 = 6,921.64 : x
  2. Step 2: Convert to fraction form
    20,070.28/30,103.26 = 6,921.64/x
  3. Step 3: Cross multiply
    20,070.28x = 30,103.26 × 6,921.64
  4. Step 4: Simplify right side
    20,070.28x = 208,363,928.55
  5. Step 5: Solve for x
    x = 208,363,928.55/20,070.28
  6. Step 6: Final answer
    x = 10,381.72

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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.