Home / 21,285.22-29,324.66-16,807.30

Finding the Fourth Proportional to 21,285.22, 29,324.66 and 16,807.30

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Solution

The fourth proportional to 21,285.22, 29,324.66 and 16,807.30 is: 23,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.22 : 29,324.66 = 16,807.30 : x
  2. Step 2: Convert to fraction form
    21,285.22/29,324.66 = 16,807.30/x
  3. Step 3: Cross multiply
    21,285.22x = 29,324.66 × 16,807.30
  4. Step 4: Simplify right side
    21,285.22x = 492,868,358.02
  5. Step 5: Solve for x
    x = 492,868,358.02/21,285.22
  6. Step 6: Final answer
    x = 23,155.43

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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.