Home / 21,416.24-29,466.60-20,919.08

Finding the Fourth Proportional to 21,416.24, 29,466.60 and 20,919.08

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Solution

The fourth proportional to 21,416.24, 29,466.60 and 20,919.08 is: 28,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.24 : 29,466.60 = 20,919.08 : x
  2. Step 2: Convert to fraction form
    21,416.24/29,466.60 = 20,919.08/x
  3. Step 3: Cross multiply
    21,416.24x = 29,466.60 × 20,919.08
  4. Step 4: Simplify right side
    21,416.24x = 616,414,162.73
  5. Step 5: Solve for x
    x = 616,414,162.73/21,416.24
  6. Step 6: Final answer
    x = 28,782.56

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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.