Home / 19,989.27-27,567.36-12,908.25

Finding the Fourth Proportional to 19,989.27, 27,567.36 and 12,908.25

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Solution

The fourth proportional to 19,989.27, 27,567.36 and 12,908.25 is: 17,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.27 : 27,567.36 = 12,908.25 : x
  2. Step 2: Convert to fraction form
    19,989.27/27,567.36 = 12,908.25/x
  3. Step 3: Cross multiply
    19,989.27x = 27,567.36 × 12,908.25
  4. Step 4: Simplify right side
    19,989.27x = 355,846,374.72
  5. Step 5: Solve for x
    x = 355,846,374.72/19,989.27
  6. Step 6: Final answer
    x = 17,801.87

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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.