Home / 19,008.71-28,520.37-13,391.78

Finding the Fourth Proportional to 19,008.71, 28,520.37 and 13,391.78

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Solution

The fourth proportional to 19,008.71, 28,520.37 and 13,391.78 is: 20,092.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.71 : 28,520.37 = 13,391.78 : x
  2. Step 2: Convert to fraction form
    19,008.71/28,520.37 = 13,391.78/x
  3. Step 3: Cross multiply
    19,008.71x = 28,520.37 × 13,391.78
  4. Step 4: Simplify right side
    19,008.71x = 381,938,520.56
  5. Step 5: Solve for x
    x = 381,938,520.56/19,008.71
  6. Step 6: Final answer
    x = 20,092.82

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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.