Home / 12,141.85-18,184.54-11,720.93

Finding the Fourth Proportional to 12,141.85, 18,184.54 and 11,720.93

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Solution

The fourth proportional to 12,141.85, 18,184.54 and 11,720.93 is: 17,554.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.85 : 18,184.54 = 11,720.93 : x
  2. Step 2: Convert to fraction form
    12,141.85/18,184.54 = 11,720.93/x
  3. Step 3: Cross multiply
    12,141.85x = 18,184.54 × 11,720.93
  4. Step 4: Simplify right side
    12,141.85x = 213,139,720.42
  5. Step 5: Solve for x
    x = 213,139,720.42/12,141.85
  6. Step 6: Final answer
    x = 17,554.14

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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.