Home / 21,520.60-29,693.22-12,563.02

Finding the Fourth Proportional to 21,520.60, 29,693.22 and 12,563.02

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Solution

The fourth proportional to 21,520.60, 29,693.22 and 12,563.02 is: 17,333.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.60 : 29,693.22 = 12,563.02 : x
  2. Step 2: Convert to fraction form
    21,520.60/29,693.22 = 12,563.02/x
  3. Step 3: Cross multiply
    21,520.60x = 29,693.22 × 12,563.02
  4. Step 4: Simplify right side
    21,520.60x = 373,036,516.72
  5. Step 5: Solve for x
    x = 373,036,516.72/21,520.60
  6. Step 6: Final answer
    x = 17,333.93

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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.