Home / 19,664.25-27,138.15-12,108.71

Finding the Fourth Proportional to 19,664.25, 27,138.15 and 12,108.71

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Solution

The fourth proportional to 19,664.25, 27,138.15 and 12,108.71 is: 16,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.25 : 27,138.15 = 12,108.71 : x
  2. Step 2: Convert to fraction form
    19,664.25/27,138.15 = 12,108.71/x
  3. Step 3: Cross multiply
    19,664.25x = 27,138.15 × 12,108.71
  4. Step 4: Simplify right side
    19,664.25x = 328,607,852.60
  5. Step 5: Solve for x
    x = 328,607,852.60/19,664.25
  6. Step 6: Final answer
    x = 16,710.93

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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.