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Finding the Fourth Proportional to 19,200.53, 28,800.80 and 5,349.53

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Solution

The fourth proportional to 19,200.53, 28,800.80 and 5,349.53 is: 8,024.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.53 : 28,800.80 = 5,349.53 : x
  2. Step 2: Convert to fraction form
    19,200.53/28,800.80 = 5,349.53/x
  3. Step 3: Cross multiply
    19,200.53x = 28,800.80 × 5,349.53
  4. Step 4: Simplify right side
    19,200.53x = 154,070,743.62
  5. Step 5: Solve for x
    x = 154,070,743.62/19,200.53
  6. Step 6: Final answer
    x = 8,024.30

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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.