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Finding the Fourth Proportional to 11,173.13, 15,423.74 and 7,398.12

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Solution

The fourth proportional to 11,173.13, 15,423.74 and 7,398.12 is: 10,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.13 : 15,423.74 = 7,398.12 : x
  2. Step 2: Convert to fraction form
    11,173.13/15,423.74 = 7,398.12/x
  3. Step 3: Cross multiply
    11,173.13x = 15,423.74 × 7,398.12
  4. Step 4: Simplify right side
    11,173.13x = 114,106,727.96
  5. Step 5: Solve for x
    x = 114,106,727.96/11,173.13
  6. Step 6: Final answer
    x = 10,212.60

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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.