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Finding the Fourth Proportional to 13,319.92, 19,977.88 and 8,374.48

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Solution

The fourth proportional to 13,319.92, 19,977.88 and 8,374.48 is: 12,560.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.92 : 19,977.88 = 8,374.48 : x
  2. Step 2: Convert to fraction form
    13,319.92/19,977.88 = 8,374.48/x
  3. Step 3: Cross multiply
    13,319.92x = 19,977.88 × 8,374.48
  4. Step 4: Simplify right side
    13,319.92x = 167,304,356.50
  5. Step 5: Solve for x
    x = 167,304,356.50/13,319.92
  6. Step 6: Final answer
    x = 12,560.46

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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.