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Finding the Fourth Proportional to 29,987.20, 44,944.80 and 20,627.20

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Solution

The fourth proportional to 29,987.20, 44,944.80 and 20,627.20 is: 30,916.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,987.20 : 44,944.80 = 20,627.20 : x
  2. Step 2: Convert to fraction form
    29,987.20/44,944.80 = 20,627.20/x
  3. Step 3: Cross multiply
    29,987.20x = 44,944.80 × 20,627.20
  4. Step 4: Simplify right side
    29,987.20x = 927,085,378.56
  5. Step 5: Solve for x
    x = 927,085,378.56/29,987.20
  6. Step 6: Final answer
    x = 30,916.04

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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.