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Finding the Fourth Proportional to 12,293.60, 18,429.60 and 7,365.20

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Solution

The fourth proportional to 12,293.60, 18,429.60 and 7,365.20 is: 11,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,293.60 : 18,429.60 = 7,365.20 : x
  2. Step 2: Convert to fraction form
    12,293.60/18,429.60 = 7,365.20/x
  3. Step 3: Cross multiply
    12,293.60x = 18,429.60 × 7,365.20
  4. Step 4: Simplify right side
    12,293.60x = 135,737,689.92
  5. Step 5: Solve for x
    x = 135,737,689.92/12,293.60
  6. Step 6: Final answer
    x = 11,041.33

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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.