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Finding the Fourth Proportional to 13,972.77, 20,955.65 and 8,352.05

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Solution

The fourth proportional to 13,972.77, 20,955.65 and 8,352.05 is: 12,525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.77 : 20,955.65 = 8,352.05 : x
  2. Step 2: Convert to fraction form
    13,972.77/20,955.65 = 8,352.05/x
  3. Step 3: Cross multiply
    13,972.77x = 20,955.65 × 8,352.05
  4. Step 4: Simplify right side
    13,972.77x = 175,022,490.04
  5. Step 5: Solve for x
    x = 175,022,490.04/13,972.77
  6. Step 6: Final answer
    x = 12,525.97

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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.