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Finding the Fourth Proportional to 12,599.79, 18,901.44 and 5,579.25

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Solution

The fourth proportional to 12,599.79, 18,901.44 and 5,579.25 is: 8,369.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,599.79 : 18,901.44 = 5,579.25 : x
  2. Step 2: Convert to fraction form
    12,599.79/18,901.44 = 5,579.25/x
  3. Step 3: Cross multiply
    12,599.79x = 18,901.44 × 5,579.25
  4. Step 4: Simplify right side
    12,599.79x = 105,455,859.12
  5. Step 5: Solve for x
    x = 105,455,859.12/12,599.79
  6. Step 6: Final answer
    x = 8,369.65

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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.