Home / 30,589.79-42,196.89-19,255.11

Finding the Fourth Proportional to 30,589.79, 42,196.89 and 19,255.11

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Solution

The fourth proportional to 30,589.79, 42,196.89 and 19,255.11 is: 26,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.79 : 42,196.89 = 19,255.11 : x
  2. Step 2: Convert to fraction form
    30,589.79/42,196.89 = 19,255.11/x
  3. Step 3: Cross multiply
    30,589.79x = 42,196.89 × 19,255.11
  4. Step 4: Simplify right side
    30,589.79x = 812,505,758.61
  5. Step 5: Solve for x
    x = 812,505,758.61/30,589.79
  6. Step 6: Final answer
    x = 26,561.34

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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.