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Finding the Fourth Proportional to 19,960.74, 29,935.02 and 8,860.50

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Solution

The fourth proportional to 19,960.74, 29,935.02 and 8,860.50 is: 13,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.74 : 29,935.02 = 8,860.50 : x
  2. Step 2: Convert to fraction form
    19,960.74/29,935.02 = 8,860.50/x
  3. Step 3: Cross multiply
    19,960.74x = 29,935.02 × 8,860.50
  4. Step 4: Simplify right side
    19,960.74x = 265,239,244.71
  5. Step 5: Solve for x
    x = 265,239,244.71/19,960.74
  6. Step 6: Final answer
    x = 13,288.05

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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.