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Finding the Fourth Proportional to 21,663.44, 32,495.16 and 7,812.44

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Solution

The fourth proportional to 21,663.44, 32,495.16 and 7,812.44 is: 11,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.44 : 32,495.16 = 7,812.44 : x
  2. Step 2: Convert to fraction form
    21,663.44/32,495.16 = 7,812.44/x
  3. Step 3: Cross multiply
    21,663.44x = 32,495.16 × 7,812.44
  4. Step 4: Simplify right side
    21,663.44x = 253,866,487.79
  5. Step 5: Solve for x
    x = 253,866,487.79/21,663.44
  6. Step 6: Final answer
    x = 11,718.66

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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.