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Finding the Fourth Proportional to 15,533.52, 21,436.50 and 8,459.94

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Solution

The fourth proportional to 15,533.52, 21,436.50 and 8,459.94 is: 11,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.52 : 21,436.50 = 8,459.94 : x
  2. Step 2: Convert to fraction form
    15,533.52/21,436.50 = 8,459.94/x
  3. Step 3: Cross multiply
    15,533.52x = 21,436.50 × 8,459.94
  4. Step 4: Simplify right side
    15,533.52x = 181,351,396.63
  5. Step 5: Solve for x
    x = 181,351,396.63/15,533.52
  6. Step 6: Final answer
    x = 11,674.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.