Home / 14,827.28-20,461.55-8,112.78

Finding the Fourth Proportional to 14,827.28, 20,461.55 and 8,112.78

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Solution

The fourth proportional to 14,827.28, 20,461.55 and 8,112.78 is: 11,195.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,827.28 : 20,461.55 = 8,112.78 : x
  2. Step 2: Convert to fraction form
    14,827.28/20,461.55 = 8,112.78/x
  3. Step 3: Cross multiply
    14,827.28x = 20,461.55 × 8,112.78
  4. Step 4: Simplify right side
    14,827.28x = 166,000,013.05
  5. Step 5: Solve for x
    x = 166,000,013.05/14,827.28
  6. Step 6: Final answer
    x = 11,195.58

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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.