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Finding the Fourth Proportional to 30,558.88, 45,843.72 and 15,763.78

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Solution

The fourth proportional to 30,558.88, 45,843.72 and 15,763.78 is: 23,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,558.88 : 45,843.72 = 15,763.78 : x
  2. Step 2: Convert to fraction form
    30,558.88/45,843.72 = 15,763.78/x
  3. Step 3: Cross multiply
    30,558.88x = 45,843.72 × 15,763.78
  4. Step 4: Simplify right side
    30,558.88x = 722,670,316.46
  5. Step 5: Solve for x
    x = 722,670,316.46/30,558.88
  6. Step 6: Final answer
    x = 23,648.46

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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.