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Finding the Fourth Proportional to 19,913.51, 29,851.80 and 8,814.28

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Solution

The fourth proportional to 19,913.51, 29,851.80 and 8,814.28 is: 13,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.51 : 29,851.80 = 8,814.28 : x
  2. Step 2: Convert to fraction form
    19,913.51/29,851.80 = 8,814.28/x
  3. Step 3: Cross multiply
    19,913.51x = 29,851.80 × 8,814.28
  4. Step 4: Simplify right side
    19,913.51x = 263,122,123.70
  5. Step 5: Solve for x
    x = 263,122,123.70/19,913.51
  6. Step 6: Final answer
    x = 13,213.25

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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.