Home / 21,203.82-29,257.47-13,747.50

Finding the Fourth Proportional to 21,203.82, 29,257.47 and 13,747.50

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Solution

The fourth proportional to 21,203.82, 29,257.47 and 13,747.50 is: 18,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.82 : 29,257.47 = 13,747.50 : x
  2. Step 2: Convert to fraction form
    21,203.82/29,257.47 = 13,747.50/x
  3. Step 3: Cross multiply
    21,203.82x = 29,257.47 × 13,747.50
  4. Step 4: Simplify right side
    21,203.82x = 402,217,068.83
  5. Step 5: Solve for x
    x = 402,217,068.83/21,203.82
  6. Step 6: Final answer
    x = 18,969.09

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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.