Home / 15,716.62-21,690.19-9,004.45

Finding the Fourth Proportional to 15,716.62, 21,690.19 and 9,004.45

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Solution

The fourth proportional to 15,716.62, 21,690.19 and 9,004.45 is: 12,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.62 : 21,690.19 = 9,004.45 : x
  2. Step 2: Convert to fraction form
    15,716.62/21,690.19 = 9,004.45/x
  3. Step 3: Cross multiply
    15,716.62x = 21,690.19 × 9,004.45
  4. Step 4: Simplify right side
    15,716.62x = 195,308,231.35
  5. Step 5: Solve for x
    x = 195,308,231.35/15,716.62
  6. Step 6: Final answer
    x = 12,426.86

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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.