Home / 19,883.87-27,439.80-11,386.12

Finding the Fourth Proportional to 19,883.87, 27,439.80 and 11,386.12

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Solution

The fourth proportional to 19,883.87, 27,439.80 and 11,386.12 is: 15,712.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.87 : 27,439.80 = 11,386.12 : x
  2. Step 2: Convert to fraction form
    19,883.87/27,439.80 = 11,386.12/x
  3. Step 3: Cross multiply
    19,883.87x = 27,439.80 × 11,386.12
  4. Step 4: Simplify right side
    19,883.87x = 312,432,847.18
  5. Step 5: Solve for x
    x = 312,432,847.18/19,883.87
  6. Step 6: Final answer
    x = 15,712.88

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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.