Home / 21,686.60-32,516.70-8,523.20

Finding the Fourth Proportional to 21,686.60, 32,516.70 and 8,523.20

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Solution

The fourth proportional to 21,686.60, 32,516.70 and 8,523.20 is: 12,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686.60 : 32,516.70 = 8,523.20 : x
  2. Step 2: Convert to fraction form
    21,686.60/32,516.70 = 8,523.20/x
  3. Step 3: Cross multiply
    21,686.60x = 32,516.70 × 8,523.20
  4. Step 4: Simplify right side
    21,686.60x = 277,146,337.44
  5. Step 5: Solve for x
    x = 277,146,337.44/21,686.60
  6. Step 6: Final answer
    x = 12,779.61

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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.