Home / 19,918.81-27,488.94-10,966.21

Finding the Fourth Proportional to 19,918.81, 27,488.94 and 10,966.21

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Solution

The fourth proportional to 19,918.81, 27,488.94 and 10,966.21 is: 15,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.81 : 27,488.94 = 10,966.21 : x
  2. Step 2: Convert to fraction form
    19,918.81/27,488.94 = 10,966.21/x
  3. Step 3: Cross multiply
    19,918.81x = 27,488.94 × 10,966.21
  4. Step 4: Simplify right side
    19,918.81x = 301,449,488.72
  5. Step 5: Solve for x
    x = 301,449,488.72/19,918.81
  6. Step 6: Final answer
    x = 15,133.91

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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.