Home / 11,009.28-16,513.92-4,771.20

Finding the Fourth Proportional to 11,009.28, 16,513.92 and 4,771.20

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Solution

The fourth proportional to 11,009.28, 16,513.92 and 4,771.20 is: 7,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.28 : 16,513.92 = 4,771.20 : x
  2. Step 2: Convert to fraction form
    11,009.28/16,513.92 = 4,771.20/x
  3. Step 3: Cross multiply
    11,009.28x = 16,513.92 × 4,771.20
  4. Step 4: Simplify right side
    11,009.28x = 78,791,215.10
  5. Step 5: Solve for x
    x = 78,791,215.10/11,009.28
  6. Step 6: Final answer
    x = 7,156.80

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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.