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Finding the Fourth Proportional to 13,980.63, 20,943.25 and 9,053.73

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Solution

The fourth proportional to 13,980.63, 20,943.25 and 9,053.73 is: 13,562.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.63 : 20,943.25 = 9,053.73 : x
  2. Step 2: Convert to fraction form
    13,980.63/20,943.25 = 9,053.73/x
  3. Step 3: Cross multiply
    13,980.63x = 20,943.25 × 9,053.73
  4. Step 4: Simplify right side
    13,980.63x = 189,614,530.82
  5. Step 5: Solve for x
    x = 189,614,530.82/13,980.63
  6. Step 6: Final answer
    x = 13,562.66

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1.5x scale

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.