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Finding the Fourth Proportional to 21,926.34, 32,889.51 and 7,136.76

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Solution

The fourth proportional to 21,926.34, 32,889.51 and 7,136.76 is: 10,705.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.34 : 32,889.51 = 7,136.76 : x
  2. Step 2: Convert to fraction form
    21,926.34/32,889.51 = 7,136.76/x
  3. Step 3: Cross multiply
    21,926.34x = 32,889.51 × 7,136.76
  4. Step 4: Simplify right side
    21,926.34x = 234,724,539.39
  5. Step 5: Solve for x
    x = 234,724,539.39/21,926.34
  6. Step 6: Final answer
    x = 10,705.14

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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.