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Finding the Fourth Proportional to 11,353.95, 15,668.81 and 7,103.65

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Solution

The fourth proportional to 11,353.95, 15,668.81 and 7,103.65 is: 9,803.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,353.95 : 15,668.81 = 7,103.65 : x
  2. Step 2: Convert to fraction form
    11,353.95/15,668.81 = 7,103.65/x
  3. Step 3: Cross multiply
    11,353.95x = 15,668.81 × 7,103.65
  4. Step 4: Simplify right side
    11,353.95x = 111,305,720.74
  5. Step 5: Solve for x
    x = 111,305,720.74/11,353.95
  6. Step 6: Final answer
    x = 9,803.26

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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.