Home / 19,767.85-27,278.91-11,805.35

Finding the Fourth Proportional to 19,767.85, 27,278.91 and 11,805.35

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Solution

The fourth proportional to 19,767.85, 27,278.91 and 11,805.35 is: 16,290.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,767.85 : 27,278.91 = 11,805.35 : x
  2. Step 2: Convert to fraction form
    19,767.85/27,278.91 = 11,805.35/x
  3. Step 3: Cross multiply
    19,767.85x = 27,278.91 × 11,805.35
  4. Step 4: Simplify right side
    19,767.85x = 322,036,943.77
  5. Step 5: Solve for x
    x = 322,036,943.77/19,767.85
  6. Step 6: Final answer
    x = 16,290.95

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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.