Home / 13,054.18-19,679.08-12,185.20

Finding the Fourth Proportional to 13,054.18, 19,679.08 and 12,185.20

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Solution

The fourth proportional to 13,054.18, 19,679.08 and 12,185.20 is: 18,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,054.18 : 19,679.08 = 12,185.20 : x
  2. Step 2: Convert to fraction form
    13,054.18/19,679.08 = 12,185.20/x
  3. Step 3: Cross multiply
    13,054.18x = 19,679.08 × 12,185.20
  4. Step 4: Simplify right side
    13,054.18x = 239,793,525.62
  5. Step 5: Solve for x
    x = 239,793,525.62/13,054.18
  6. Step 6: Final answer
    x = 18,369.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.