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Finding the Fourth Proportional to 14,494.49, 20,004.51 and 8,121.51

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Solution

The fourth proportional to 14,494.49, 20,004.51 and 8,121.51 is: 11,208.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,494.49 : 20,004.51 = 8,121.51 : x
  2. Step 2: Convert to fraction form
    14,494.49/20,004.51 = 8,121.51/x
  3. Step 3: Cross multiply
    14,494.49x = 20,004.51 × 8,121.51
  4. Step 4: Simplify right side
    14,494.49x = 162,466,807.71
  5. Step 5: Solve for x
    x = 162,466,807.71/14,494.49
  6. Step 6: Final answer
    x = 11,208.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.