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Finding the Fourth Proportional to 19,805.70, 29,667.15 and 9,284.70

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Solution

The fourth proportional to 19,805.70, 29,667.15 and 9,284.70 is: 13,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.70 : 29,667.15 = 9,284.70 : x
  2. Step 2: Convert to fraction form
    19,805.70/29,667.15 = 9,284.70/x
  3. Step 3: Cross multiply
    19,805.70x = 29,667.15 × 9,284.70
  4. Step 4: Simplify right side
    19,805.70x = 275,450,587.61
  5. Step 5: Solve for x
    x = 275,450,587.61/19,805.70
  6. Step 6: Final answer
    x = 13,907.64

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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.