Home / 20,230.28-27,913.08-12,270.92

Finding the Fourth Proportional to 20,230.28, 27,913.08 and 12,270.92

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Solution

The fourth proportional to 20,230.28, 27,913.08 and 12,270.92 is: 16,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.28 : 27,913.08 = 12,270.92 : x
  2. Step 2: Convert to fraction form
    20,230.28/27,913.08 = 12,270.92/x
  3. Step 3: Cross multiply
    20,230.28x = 27,913.08 × 12,270.92
  4. Step 4: Simplify right side
    20,230.28x = 342,519,171.63
  5. Step 5: Solve for x
    x = 342,519,171.63/20,230.28
  6. Step 6: Final answer
    x = 16,931.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.