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Finding the Fourth Proportional to 14,290.76, 19,721.48 and 8,322.28

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Solution

The fourth proportional to 14,290.76, 19,721.48 and 8,322.28 is: 11,484.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.76 : 19,721.48 = 8,322.28 : x
  2. Step 2: Convert to fraction form
    14,290.76/19,721.48 = 8,322.28/x
  3. Step 3: Cross multiply
    14,290.76x = 19,721.48 × 8,322.28
  4. Step 4: Simplify right side
    14,290.76x = 164,127,587.66
  5. Step 5: Solve for x
    x = 164,127,587.66/14,290.76
  6. Step 6: Final answer
    x = 11,484.87

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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.