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Finding the Fourth Proportional to 21,861.70, 32,792.58 and 8,714.18

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Solution

The fourth proportional to 21,861.70, 32,792.58 and 8,714.18 is: 13,071.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.70 : 32,792.58 = 8,714.18 : x
  2. Step 2: Convert to fraction form
    21,861.70/32,792.58 = 8,714.18/x
  3. Step 3: Cross multiply
    21,861.70x = 32,792.58 × 8,714.18
  4. Step 4: Simplify right side
    21,861.70x = 285,760,526.77
  5. Step 5: Solve for x
    x = 285,760,526.77/21,861.70
  6. Step 6: Final answer
    x = 13,071.29

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1.5x scale

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.