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Finding the Fourth Proportional to 14,290.17, 19,721.64 and 8,323.71

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Solution

The fourth proportional to 14,290.17, 19,721.64 and 8,323.71 is: 11,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.17 : 19,721.64 = 8,323.71 : x
  2. Step 2: Convert to fraction form
    14,290.17/19,721.64 = 8,323.71/x
  3. Step 3: Cross multiply
    14,290.17x = 19,721.64 × 8,323.71
  4. Step 4: Simplify right side
    14,290.17x = 164,157,212.08
  5. Step 5: Solve for x
    x = 164,157,212.08/14,290.17
  6. Step 6: Final answer
    x = 11,487.42

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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.