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Finding the Fourth Proportional to 19,692.69, 29,513.52 and 7,999.53

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Solution

The fourth proportional to 19,692.69, 29,513.52 and 7,999.53 is: 11,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.69 : 29,513.52 = 7,999.53 : x
  2. Step 2: Convert to fraction form
    19,692.69/29,513.52 = 7,999.53/x
  3. Step 3: Cross multiply
    19,692.69x = 29,513.52 × 7,999.53
  4. Step 4: Simplify right side
    19,692.69x = 236,094,288.65
  5. Step 5: Solve for x
    x = 236,094,288.65/19,692.69
  6. Step 6: Final answer
    x = 11,988.93

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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.