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Finding the Fourth Proportional to 42,692.70, 64,039.02 and 11,527.92

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Solution

The fourth proportional to 42,692.70, 64,039.02 and 11,527.92 is: 17,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,692.70 : 64,039.02 = 11,527.92 : x
  2. Step 2: Convert to fraction form
    42,692.70/64,039.02 = 11,527.92/x
  3. Step 3: Cross multiply
    42,692.70x = 64,039.02 × 11,527.92
  4. Step 4: Simplify right side
    42,692.70x = 738,236,699.44
  5. Step 5: Solve for x
    x = 738,236,699.44/42,692.70
  6. Step 6: Final answer
    x = 17,291.87

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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.