Home / 19,578.32-27,020.88-12,883.36

Finding the Fourth Proportional to 19,578.32, 27,020.88 and 12,883.36

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Solution

The fourth proportional to 19,578.32, 27,020.88 and 12,883.36 is: 17,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.32 : 27,020.88 = 12,883.36 : x
  2. Step 2: Convert to fraction form
    19,578.32/27,020.88 = 12,883.36/x
  3. Step 3: Cross multiply
    19,578.32x = 27,020.88 × 12,883.36
  4. Step 4: Simplify right side
    19,578.32x = 348,119,724.56
  5. Step 5: Solve for x
    x = 348,119,724.56/19,578.32
  6. Step 6: Final answer
    x = 17,780.88

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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.