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Finding the Fourth Proportional to 19,969.90, 29,937.43 and 7,486.58

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Solution

The fourth proportional to 19,969.90, 29,937.43 and 7,486.58 is: 11,223.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.90 : 29,937.43 = 7,486.58 : x
  2. Step 2: Convert to fraction form
    19,969.90/29,937.43 = 7,486.58/x
  3. Step 3: Cross multiply
    19,969.90x = 29,937.43 × 7,486.58
  4. Step 4: Simplify right side
    19,969.90x = 224,128,964.69
  5. Step 5: Solve for x
    x = 224,128,964.69/19,969.90
  6. Step 6: Final answer
    x = 11,223.34

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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.