Home / 19,618.81-27,072.63-11,120.09

Finding the Fourth Proportional to 19,618.81, 27,072.63 and 11,120.09

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Solution

The fourth proportional to 19,618.81, 27,072.63 and 11,120.09 is: 15,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.81 : 27,072.63 = 11,120.09 : x
  2. Step 2: Convert to fraction form
    19,618.81/27,072.63 = 11,120.09/x
  3. Step 3: Cross multiply
    19,618.81x = 27,072.63 × 11,120.09
  4. Step 4: Simplify right side
    19,618.81x = 301,049,946.77
  5. Step 5: Solve for x
    x = 301,049,946.77/19,618.81
  6. Step 6: Final answer
    x = 15,344.97

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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.