Home / 19,864.12-27,409.44-11,479

Finding the Fourth Proportional to 19,864.12, 27,409.44 and 11,479

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Solution

The fourth proportional to 19,864.12, 27,409.44 and 11,479 is: 15,839.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.12 : 27,409.44 = 11,479 : x
  2. Step 2: Convert to fraction form
    19,864.12/27,409.44 = 11,479/x
  3. Step 3: Cross multiply
    19,864.12x = 27,409.44 × 11,479
  4. Step 4: Simplify right side
    19,864.12x = 314,632,961.76
  5. Step 5: Solve for x
    x = 314,632,961.76/19,864.12
  6. Step 6: Final answer
    x = 15,839.26

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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.