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Finding the Fourth Proportional to 13,752.48, 18,964.08 and 8,162.40

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Solution

The fourth proportional to 13,752.48, 18,964.08 and 8,162.40 is: 11,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.48 : 18,964.08 = 8,162.40 : x
  2. Step 2: Convert to fraction form
    13,752.48/18,964.08 = 8,162.40/x
  3. Step 3: Cross multiply
    13,752.48x = 18,964.08 × 8,162.40
  4. Step 4: Simplify right side
    13,752.48x = 154,792,406.59
  5. Step 5: Solve for x
    x = 154,792,406.59/13,752.48
  6. Step 6: Final answer
    x = 11,255.60

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1.5x scale

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.