Home / 20,667.60-28,525.40-12,282.48

Finding the Fourth Proportional to 20,667.60, 28,525.40 and 12,282.48

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Solution

The fourth proportional to 20,667.60, 28,525.40 and 12,282.48 is: 16,952.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.60 : 28,525.40 = 12,282.48 : x
  2. Step 2: Convert to fraction form
    20,667.60/28,525.40 = 12,282.48/x
  3. Step 3: Cross multiply
    20,667.60x = 28,525.40 × 12,282.48
  4. Step 4: Simplify right side
    20,667.60x = 350,362,654.99
  5. Step 5: Solve for x
    x = 350,362,654.99/20,667.60
  6. Step 6: Final answer
    x = 16,952.27

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1.5x scale

Why These Related Problems?

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