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Finding the Fourth Proportional to 19,200.42, 28,803.06 and 7,512.12

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Solution

The fourth proportional to 19,200.42, 28,803.06 and 7,512.12 is: 11,269.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.42 : 28,803.06 = 7,512.12 : x
  2. Step 2: Convert to fraction form
    19,200.42/28,803.06 = 7,512.12/x
  3. Step 3: Cross multiply
    19,200.42x = 28,803.06 × 7,512.12
  4. Step 4: Simplify right side
    19,200.42x = 216,372,043.09
  5. Step 5: Solve for x
    x = 216,372,043.09/19,200.42
  6. Step 6: Final answer
    x = 11,269.13

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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.