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Finding the Fourth Proportional to 20,160.80, 30,237.25 and 19,160.63

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Solution

The fourth proportional to 20,160.80, 30,237.25 and 19,160.63 is: 28,737.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.80 : 30,237.25 = 19,160.63 : x
  2. Step 2: Convert to fraction form
    20,160.80/30,237.25 = 19,160.63/x
  3. Step 3: Cross multiply
    20,160.80x = 30,237.25 × 19,160.63
  4. Step 4: Simplify right side
    20,160.80x = 579,364,759.47
  5. Step 5: Solve for x
    x = 579,364,759.47/20,160.80
  6. Step 6: Final answer
    x = 28,737.19

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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.