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Finding the Fourth Proportional to 15,765.34, 21,756.34 and 8,692.02

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Solution

The fourth proportional to 15,765.34, 21,756.34 and 8,692.02 is: 11,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.34 : 21,756.34 = 8,692.02 : x
  2. Step 2: Convert to fraction form
    15,765.34/21,756.34 = 8,692.02/x
  3. Step 3: Cross multiply
    15,765.34x = 21,756.34 × 8,692.02
  4. Step 4: Simplify right side
    15,765.34x = 189,106,542.41
  5. Step 5: Solve for x
    x = 189,106,542.41/15,765.34
  6. Step 6: Final answer
    x = 11,995.08

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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.