Home / 11,801.10-16,242.75-11,120.70

Finding the Fourth Proportional to 11,801.10, 16,242.75 and 11,120.70

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Solution

The fourth proportional to 11,801.10, 16,242.75 and 11,120.70 is: 15,306.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,801.10 : 16,242.75 = 11,120.70 : x
  2. Step 2: Convert to fraction form
    11,801.10/16,242.75 = 11,120.70/x
  3. Step 3: Cross multiply
    11,801.10x = 16,242.75 × 11,120.70
  4. Step 4: Simplify right side
    11,801.10x = 180,630,749.93
  5. Step 5: Solve for x
    x = 180,630,749.93/11,801.10
  6. Step 6: Final answer
    x = 15,306.26

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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.