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Finding the Fourth Proportional to 12,398.48, 18,599.44 and 6,555.50

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Solution

The fourth proportional to 12,398.48, 18,599.44 and 6,555.50 is: 9,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.48 : 18,599.44 = 6,555.50 : x
  2. Step 2: Convert to fraction form
    12,398.48/18,599.44 = 6,555.50/x
  3. Step 3: Cross multiply
    12,398.48x = 18,599.44 × 6,555.50
  4. Step 4: Simplify right side
    12,398.48x = 121,928,628.92
  5. Step 5: Solve for x
    x = 121,928,628.92/12,398.48
  6. Step 6: Final answer
    x = 9,834.16

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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.