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Finding the Fourth Proportional to 19,258.60, 28,890.60 and 7,569.10

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Solution

The fourth proportional to 19,258.60, 28,890.60 and 7,569.10 is: 11,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,258.60 : 28,890.60 = 7,569.10 : x
  2. Step 2: Convert to fraction form
    19,258.60/28,890.60 = 7,569.10/x
  3. Step 3: Cross multiply
    19,258.60x = 28,890.60 × 7,569.10
  4. Step 4: Simplify right side
    19,258.60x = 218,675,840.46
  5. Step 5: Solve for x
    x = 218,675,840.46/19,258.60
  6. Step 6: Final answer
    x = 11,354.71

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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.