Home / 19,940.51-27,519.12-10,988.00

Finding the Fourth Proportional to 19,940.51, 27,519.12 and 10,988.00

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Solution

The fourth proportional to 19,940.51, 27,519.12 and 10,988.00 is: 15,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.51 : 27,519.12 = 10,988.00 : x
  2. Step 2: Convert to fraction form
    19,940.51/27,519.12 = 10,988.00/x
  3. Step 3: Cross multiply
    19,940.51x = 27,519.12 × 10,988.00
  4. Step 4: Simplify right side
    19,940.51x = 302,380,159.36
  5. Step 5: Solve for x
    x = 302,380,159.36/19,940.51
  6. Step 6: Final answer
    x = 15,164.12

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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.