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Finding the Fourth Proportional to 12,998.77, 19,500.19 and 5,605.33

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Solution

The fourth proportional to 12,998.77, 19,500.19 and 5,605.33 is: 8,408.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.77 : 19,500.19 = 5,605.33 : x
  2. Step 2: Convert to fraction form
    12,998.77/19,500.19 = 5,605.33/x
  3. Step 3: Cross multiply
    12,998.77x = 19,500.19 × 5,605.33
  4. Step 4: Simplify right side
    12,998.77x = 109,304,888.50
  5. Step 5: Solve for x
    x = 109,304,888.50/12,998.77
  6. Step 6: Final answer
    x = 8,408.87

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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.