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Finding the Fourth Proportional to 19,002.60, 28,503.90 and 5,151.60

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Solution

The fourth proportional to 19,002.60, 28,503.90 and 5,151.60 is: 7,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,002.60 : 28,503.90 = 5,151.60 : x
  2. Step 2: Convert to fraction form
    19,002.60/28,503.90 = 5,151.60/x
  3. Step 3: Cross multiply
    19,002.60x = 28,503.90 × 5,151.60
  4. Step 4: Simplify right side
    19,002.60x = 146,840,691.24
  5. Step 5: Solve for x
    x = 146,840,691.24/19,002.60
  6. Step 6: Final answer
    x = 7,727.40

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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.