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Finding the Fourth Proportional to 12,701.80, 17,537.04 and 7,929.01

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Solution

The fourth proportional to 12,701.80, 17,537.04 and 7,929.01 is: 10,947.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.80 : 17,537.04 = 7,929.01 : x
  2. Step 2: Convert to fraction form
    12,701.80/17,537.04 = 7,929.01/x
  3. Step 3: Cross multiply
    12,701.80x = 17,537.04 × 7,929.01
  4. Step 4: Simplify right side
    12,701.80x = 139,051,365.53
  5. Step 5: Solve for x
    x = 139,051,365.53/12,701.80
  6. Step 6: Final answer
    x = 10,947.37

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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.