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Finding the Fourth Proportional to 15,093.01, 20,828.19 and 8,378.47

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Solution

The fourth proportional to 15,093.01, 20,828.19 and 8,378.47 is: 11,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.01 : 20,828.19 = 8,378.47 : x
  2. Step 2: Convert to fraction form
    15,093.01/20,828.19 = 8,378.47/x
  3. Step 3: Cross multiply
    15,093.01x = 20,828.19 × 8,378.47
  4. Step 4: Simplify right side
    15,093.01x = 174,508,365.07
  5. Step 5: Solve for x
    x = 174,508,365.07/15,093.01
  6. Step 6: Final answer
    x = 11,562.20

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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.