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Finding the Fourth Proportional to 11,475.70, 17,213.55 and 5,643.70

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Solution

The fourth proportional to 11,475.70, 17,213.55 and 5,643.70 is: 8,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.70 : 17,213.55 = 5,643.70 : x
  2. Step 2: Convert to fraction form
    11,475.70/17,213.55 = 5,643.70/x
  3. Step 3: Cross multiply
    11,475.70x = 17,213.55 × 5,643.70
  4. Step 4: Simplify right side
    11,475.70x = 97,148,112.14
  5. Step 5: Solve for x
    x = 97,148,112.14/11,475.70
  6. Step 6: Final answer
    x = 8,465.55

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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.