Home / 19,790.45-27,308.31-15,767.48

Finding the Fourth Proportional to 19,790.45, 27,308.31 and 15,767.48

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Solution

The fourth proportional to 19,790.45, 27,308.31 and 15,767.48 is: 21,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.45 : 27,308.31 = 15,767.48 : x
  2. Step 2: Convert to fraction form
    19,790.45/27,308.31 = 15,767.48/x
  3. Step 3: Cross multiply
    19,790.45x = 27,308.31 × 15,767.48
  4. Step 4: Simplify right side
    19,790.45x = 430,583,095.22
  5. Step 5: Solve for x
    x = 430,583,095.22/19,790.45
  6. Step 6: Final answer
    x = 21,757.12

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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.