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Finding the Fourth Proportional to 15,423.68, 21,284.68 and 8,350.10

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Solution

The fourth proportional to 15,423.68, 21,284.68 and 8,350.10 is: 11,523.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.68 : 21,284.68 = 8,350.10 : x
  2. Step 2: Convert to fraction form
    15,423.68/21,284.68 = 8,350.10/x
  3. Step 3: Cross multiply
    15,423.68x = 21,284.68 × 8,350.10
  4. Step 4: Simplify right side
    15,423.68x = 177,729,174.64
  5. Step 5: Solve for x
    x = 177,729,174.64/15,423.68
  6. Step 6: Final answer
    x = 11,523.14

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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.