Home / 19,990.74-27,590.78-11,924.89

Finding the Fourth Proportional to 19,990.74, 27,590.78 and 11,924.89

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Solution

The fourth proportional to 19,990.74, 27,590.78 and 11,924.89 is: 16,458.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.74 : 27,590.78 = 11,924.89 : x
  2. Step 2: Convert to fraction form
    19,990.74/27,590.78 = 11,924.89/x
  3. Step 3: Cross multiply
    19,990.74x = 27,590.78 × 11,924.89
  4. Step 4: Simplify right side
    19,990.74x = 329,017,016.51
  5. Step 5: Solve for x
    x = 329,017,016.51/19,990.74
  6. Step 6: Final answer
    x = 16,458.47

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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.