Home / 19,918.48-27,488.36-11,961.36

Finding the Fourth Proportional to 19,918.48, 27,488.36 and 11,961.36

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Solution

The fourth proportional to 19,918.48, 27,488.36 and 11,961.36 is: 16,507.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.48 : 27,488.36 = 11,961.36 : x
  2. Step 2: Convert to fraction form
    19,918.48/27,488.36 = 11,961.36/x
  3. Step 3: Cross multiply
    19,918.48x = 27,488.36 × 11,961.36
  4. Step 4: Simplify right side
    19,918.48x = 328,798,169.77
  5. Step 5: Solve for x
    x = 328,798,169.77/19,918.48
  6. Step 6: Final answer
    x = 16,507.19

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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.