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Finding the Fourth Proportional to 20,374.51, 30,566.37 and 9,278.23

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Solution

The fourth proportional to 20,374.51, 30,566.37 and 9,278.23 is: 13,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.51 : 30,566.37 = 9,278.23 : x
  2. Step 2: Convert to fraction form
    20,374.51/30,566.37 = 9,278.23/x
  3. Step 3: Cross multiply
    20,374.51x = 30,566.37 × 9,278.23
  4. Step 4: Simplify right side
    20,374.51x = 283,601,811.13
  5. Step 5: Solve for x
    x = 283,601,811.13/20,374.51
  6. Step 6: Final answer
    x = 13,919.44

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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.