Home / 13,518.84-18,751.44-13,159.20

Finding the Fourth Proportional to 13,518.84, 18,751.44 and 13,159.20

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Solution

The fourth proportional to 13,518.84, 18,751.44 and 13,159.20 is: 18,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.84 : 18,751.44 = 13,159.20 : x
  2. Step 2: Convert to fraction form
    13,518.84/18,751.44 = 13,159.20/x
  3. Step 3: Cross multiply
    13,518.84x = 18,751.44 × 13,159.20
  4. Step 4: Simplify right side
    13,518.84x = 246,753,949.25
  5. Step 5: Solve for x
    x = 246,753,949.25/13,518.84
  6. Step 6: Final answer
    x = 18,252.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.