Home / 14,111.82-21,200.13-12,143.52

Finding the Fourth Proportional to 14,111.82, 21,200.13 and 12,143.52

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Solution

The fourth proportional to 14,111.82, 21,200.13 and 12,143.52 is: 18,243.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,111.82 : 21,200.13 = 12,143.52 : x
  2. Step 2: Convert to fraction form
    14,111.82/21,200.13 = 12,143.52/x
  3. Step 3: Cross multiply
    14,111.82x = 21,200.13 × 12,143.52
  4. Step 4: Simplify right side
    14,111.82x = 257,444,202.66
  5. Step 5: Solve for x
    x = 257,444,202.66/14,111.82
  6. Step 6: Final answer
    x = 18,243.16

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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.