Home / 19,995.54-27,589.05-12,920.82

Finding the Fourth Proportional to 19,995.54, 27,589.05 and 12,920.82

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Solution

The fourth proportional to 19,995.54, 27,589.05 and 12,920.82 is: 17,827.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.54 : 27,589.05 = 12,920.82 : x
  2. Step 2: Convert to fraction form
    19,995.54/27,589.05 = 12,920.82/x
  3. Step 3: Cross multiply
    19,995.54x = 27,589.05 × 12,920.82
  4. Step 4: Simplify right side
    19,995.54x = 356,473,149.02
  5. Step 5: Solve for x
    x = 356,473,149.02/19,995.54
  6. Step 6: Final answer
    x = 17,827.63

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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.