Home / 19,689.93-27,166.19-12,137.13

Finding the Fourth Proportional to 19,689.93, 27,166.19 and 12,137.13

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Solution

The fourth proportional to 19,689.93, 27,166.19 and 12,137.13 is: 16,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.93 : 27,166.19 = 12,137.13 : x
  2. Step 2: Convert to fraction form
    19,689.93/27,166.19 = 12,137.13/x
  3. Step 3: Cross multiply
    19,689.93x = 27,166.19 × 12,137.13
  4. Step 4: Simplify right side
    19,689.93x = 329,719,518.95
  5. Step 5: Solve for x
    x = 329,719,518.95/19,689.93
  6. Step 6: Final answer
    x = 16,745.59

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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.