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Finding the Fourth Proportional to 19,359.99, 29,040.18 and 8,259.75

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Solution

The fourth proportional to 19,359.99, 29,040.18 and 8,259.75 is: 12,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.99 : 29,040.18 = 8,259.75 : x
  2. Step 2: Convert to fraction form
    19,359.99/29,040.18 = 8,259.75/x
  3. Step 3: Cross multiply
    19,359.99x = 29,040.18 × 8,259.75
  4. Step 4: Simplify right side
    19,359.99x = 239,864,626.76
  5. Step 5: Solve for x
    x = 239,864,626.76/19,359.99
  6. Step 6: Final answer
    x = 12,389.71

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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.