Home / 19,431.66-29,176.65-11,121.06

Finding the Fourth Proportional to 19,431.66, 29,176.65 and 11,121.06

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Solution

The fourth proportional to 19,431.66, 29,176.65 and 11,121.06 is: 16,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.66 : 29,176.65 = 11,121.06 : x
  2. Step 2: Convert to fraction form
    19,431.66/29,176.65 = 11,121.06/x
  3. Step 3: Cross multiply
    19,431.66x = 29,176.65 × 11,121.06
  4. Step 4: Simplify right side
    19,431.66x = 324,475,275.25
  5. Step 5: Solve for x
    x = 324,475,275.25/19,431.66
  6. Step 6: Final answer
    x = 16,698.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.