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Finding the Fourth Proportional to 21,357, 32,035.50 and 7,506

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Solution

The fourth proportional to 21,357, 32,035.50 and 7,506 is: 11,259

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357 : 32,035.50 = 7,506 : x
  2. Step 2: Convert to fraction form
    21,357/32,035.50 = 7,506/x
  3. Step 3: Cross multiply
    21,357x = 32,035.50 × 7,506
  4. Step 4: Simplify right side
    21,357x = 240,458,463
  5. Step 5: Solve for x
    x = 240,458,463/21,357
  6. Step 6: Final answer
    x = 11,259

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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.