Home / 30,735.88-42,416.36-18,799

Finding the Fourth Proportional to 30,735.88, 42,416.36 and 18,799

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Solution

The fourth proportional to 30,735.88, 42,416.36 and 18,799 is: 25,943.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,735.88 : 42,416.36 = 18,799 : x
  2. Step 2: Convert to fraction form
    30,735.88/42,416.36 = 18,799/x
  3. Step 3: Cross multiply
    30,735.88x = 42,416.36 × 18,799
  4. Step 4: Simplify right side
    30,735.88x = 797,385,151.64
  5. Step 5: Solve for x
    x = 797,385,151.64/30,735.88
  6. Step 6: Final answer
    x = 25,943.14

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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.