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Finding the Fourth Proportional to 19,330.60, 28,998.60 and 8,237.20

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Solution

The fourth proportional to 19,330.60, 28,998.60 and 8,237.20 is: 12,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,330.60 : 28,998.60 = 8,237.20 : x
  2. Step 2: Convert to fraction form
    19,330.60/28,998.60 = 8,237.20/x
  3. Step 3: Cross multiply
    19,330.60x = 28,998.60 × 8,237.20
  4. Step 4: Simplify right side
    19,330.60x = 238,867,267.92
  5. Step 5: Solve for x
    x = 238,867,267.92/19,330.60
  6. Step 6: Final answer
    x = 12,356.95

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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.