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Finding the Fourth Proportional to 20,339.94, 30,510.99 and 6,309.66

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Solution

The fourth proportional to 20,339.94, 30,510.99 and 6,309.66 is: 9,464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.94 : 30,510.99 = 6,309.66 : x
  2. Step 2: Convert to fraction form
    20,339.94/30,510.99 = 6,309.66/x
  3. Step 3: Cross multiply
    20,339.94x = 30,510.99 × 6,309.66
  4. Step 4: Simplify right side
    20,339.94x = 192,513,973.16
  5. Step 5: Solve for x
    x = 192,513,973.16/20,339.94
  6. Step 6: Final answer
    x = 9,464.83

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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.