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Finding the Fourth Proportional to 13,980.56, 20,943.14 and 9,053.64

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Solution

The fourth proportional to 13,980.56, 20,943.14 and 9,053.64 is: 13,562.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.56 : 20,943.14 = 9,053.64 : x
  2. Step 2: Convert to fraction form
    13,980.56/20,943.14 = 9,053.64/x
  3. Step 3: Cross multiply
    13,980.56x = 20,943.14 × 9,053.64
  4. Step 4: Simplify right side
    13,980.56x = 189,611,604.76
  5. Step 5: Solve for x
    x = 189,611,604.76/13,980.56
  6. Step 6: Final answer
    x = 13,562.52

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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.