Home / 19,662.16-27,138.68-12,114.95

Finding the Fourth Proportional to 19,662.16, 27,138.68 and 12,114.95

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Solution

The fourth proportional to 19,662.16, 27,138.68 and 12,114.95 is: 16,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.16 : 27,138.68 = 12,114.95 : x
  2. Step 2: Convert to fraction form
    19,662.16/27,138.68 = 12,114.95/x
  3. Step 3: Cross multiply
    19,662.16x = 27,138.68 × 12,114.95
  4. Step 4: Simplify right side
    19,662.16x = 328,783,690.69
  5. Step 5: Solve for x
    x = 328,783,690.69/19,662.16
  6. Step 6: Final answer
    x = 16,721.65

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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.