Home / 30,620.79-42,255.31-17,191.80

Finding the Fourth Proportional to 30,620.79, 42,255.31 and 17,191.80

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Solution

The fourth proportional to 30,620.79, 42,255.31 and 17,191.80 is: 23,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.79 : 42,255.31 = 17,191.80 : x
  2. Step 2: Convert to fraction form
    30,620.79/42,255.31 = 17,191.80/x
  3. Step 3: Cross multiply
    30,620.79x = 42,255.31 × 17,191.80
  4. Step 4: Simplify right side
    30,620.79x = 726,444,838.46
  5. Step 5: Solve for x
    x = 726,444,838.46/30,620.79
  6. Step 6: Final answer
    x = 23,723.91

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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.