Home / 27,650.31-38,157.48-15,717.60

Finding the Fourth Proportional to 27,650.31, 38,157.48 and 15,717.60

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Solution

The fourth proportional to 27,650.31, 38,157.48 and 15,717.60 is: 21,690.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,650.31 : 38,157.48 = 15,717.60 : x
  2. Step 2: Convert to fraction form
    27,650.31/38,157.48 = 15,717.60/x
  3. Step 3: Cross multiply
    27,650.31x = 38,157.48 × 15,717.60
  4. Step 4: Simplify right side
    27,650.31x = 599,744,007.65
  5. Step 5: Solve for x
    x = 599,744,007.65/27,650.31
  6. Step 6: Final answer
    x = 21,690.32

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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.