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Finding the Fourth Proportional to 18,599.10, 27,870.78 and 7,499.70

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Solution

The fourth proportional to 18,599.10, 27,870.78 and 7,499.70 is: 11,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,599.10 : 27,870.78 = 7,499.70 : x
  2. Step 2: Convert to fraction form
    18,599.10/27,870.78 = 7,499.70/x
  3. Step 3: Cross multiply
    18,599.10x = 27,870.78 × 7,499.70
  4. Step 4: Simplify right side
    18,599.10x = 209,022,488.77
  5. Step 5: Solve for x
    x = 209,022,488.77/18,599.10
  6. Step 6: Final answer
    x = 11,238.31

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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.