Home / 30,372.88-41,916-18,437.44

Finding the Fourth Proportional to 30,372.88, 41,916 and 18,437.44

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Solution

The fourth proportional to 30,372.88, 41,916 and 18,437.44 is: 25,444.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.88 : 41,916 = 18,437.44 : x
  2. Step 2: Convert to fraction form
    30,372.88/41,916 = 18,437.44/x
  3. Step 3: Cross multiply
    30,372.88x = 41,916 × 18,437.44
  4. Step 4: Simplify right side
    30,372.88x = 772,823,735.04
  5. Step 5: Solve for x
    x = 772,823,735.04/30,372.88
  6. Step 6: Final answer
    x = 25,444.53

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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.