Home / 19,990.91-27,587.88-11,038.98

Finding the Fourth Proportional to 19,990.91, 27,587.88 and 11,038.98

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Solution

The fourth proportional to 19,990.91, 27,587.88 and 11,038.98 is: 15,234.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.91 : 27,587.88 = 11,038.98 : x
  2. Step 2: Convert to fraction form
    19,990.91/27,587.88 = 11,038.98/x
  3. Step 3: Cross multiply
    19,990.91x = 27,587.88 × 11,038.98
  4. Step 4: Simplify right side
    19,990.91x = 304,542,055.56
  5. Step 5: Solve for x
    x = 304,542,055.56/19,990.91
  6. Step 6: Final answer
    x = 15,234.03

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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.