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Finding the Fourth Proportional to 14,395.65, 21,605.78 and 5,636.71

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Solution

The fourth proportional to 14,395.65, 21,605.78 and 5,636.71 is: 8,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,395.65 : 21,605.78 = 5,636.71 : x
  2. Step 2: Convert to fraction form
    14,395.65/21,605.78 = 5,636.71/x
  3. Step 3: Cross multiply
    14,395.65x = 21,605.78 × 5,636.71
  4. Step 4: Simplify right side
    14,395.65x = 121,785,516.18
  5. Step 5: Solve for x
    x = 121,785,516.18/14,395.65
  6. Step 6: Final answer
    x = 8,459.88

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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.