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Finding the Fourth Proportional to 30,679.71, 46,020.15 and 9,619.29

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Solution

The fourth proportional to 30,679.71, 46,020.15 and 9,619.29 is: 14,429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.71 : 46,020.15 = 9,619.29 : x
  2. Step 2: Convert to fraction form
    30,679.71/46,020.15 = 9,619.29/x
  3. Step 3: Cross multiply
    30,679.71x = 46,020.15 × 9,619.29
  4. Step 4: Simplify right side
    30,679.71x = 442,681,168.69
  5. Step 5: Solve for x
    x = 442,681,168.69/30,679.71
  6. Step 6: Final answer
    x = 14,429.12

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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.