Home / 19,918.35-27,488.12-10,966.70

Finding the Fourth Proportional to 19,918.35, 27,488.12 and 10,966.70

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Solution

The fourth proportional to 19,918.35, 27,488.12 and 10,966.70 is: 15,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.35 : 27,488.12 = 10,966.70 : x
  2. Step 2: Convert to fraction form
    19,918.35/27,488.12 = 10,966.70/x
  3. Step 3: Cross multiply
    19,918.35x = 27,488.12 × 10,966.70
  4. Step 4: Simplify right side
    19,918.35x = 301,453,979.49
  5. Step 5: Solve for x
    x = 301,453,979.49/19,918.35
  6. Step 6: Final answer
    x = 15,134.49

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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.