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Finding the Fourth Proportional to 19,851.65, 29,776.51 and 7,374.11

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Solution

The fourth proportional to 19,851.65, 29,776.51 and 7,374.11 is: 11,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.65 : 29,776.51 = 7,374.11 : x
  2. Step 2: Convert to fraction form
    19,851.65/29,776.51 = 7,374.11/x
  3. Step 3: Cross multiply
    19,851.65x = 29,776.51 × 7,374.11
  4. Step 4: Simplify right side
    19,851.65x = 219,575,120.49
  5. Step 5: Solve for x
    x = 219,575,120.49/19,851.65
  6. Step 6: Final answer
    x = 11,060.80

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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.