Home / 18,918.65-26,110.79-10,965.47

Finding the Fourth Proportional to 18,918.65, 26,110.79 and 10,965.47

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Solution

The fourth proportional to 18,918.65, 26,110.79 and 10,965.47 is: 15,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.65 : 26,110.79 = 10,965.47 : x
  2. Step 2: Convert to fraction form
    18,918.65/26,110.79 = 10,965.47/x
  3. Step 3: Cross multiply
    18,918.65x = 26,110.79 × 10,965.47
  4. Step 4: Simplify right side
    18,918.65x = 286,316,940.16
  5. Step 5: Solve for x
    x = 286,316,940.16/18,918.65
  6. Step 6: Final answer
    x = 15,134.11

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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.