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Finding the Fourth Proportional to 9,963.81, 14,920.20 and 8,316.27

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Solution

The fourth proportional to 9,963.81, 14,920.20 and 8,316.27 is: 12,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.81 : 14,920.20 = 8,316.27 : x
  2. Step 2: Convert to fraction form
    9,963.81/14,920.20 = 8,316.27/x
  3. Step 3: Cross multiply
    9,963.81x = 14,920.20 × 8,316.27
  4. Step 4: Simplify right side
    9,963.81x = 124,080,411.65
  5. Step 5: Solve for x
    x = 124,080,411.65/9,963.81
  6. Step 6: Final answer
    x = 12,453.11

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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.