Home / 20,732.51-28,611.45-12,667.48

Finding the Fourth Proportional to 20,732.51, 28,611.45 and 12,667.48

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Solution

The fourth proportional to 20,732.51, 28,611.45 and 12,667.48 is: 17,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.51 : 28,611.45 = 12,667.48 : x
  2. Step 2: Convert to fraction form
    20,732.51/28,611.45 = 12,667.48/x
  3. Step 3: Cross multiply
    20,732.51x = 28,611.45 × 12,667.48
  4. Step 4: Simplify right side
    20,732.51x = 362,434,899.12
  5. Step 5: Solve for x
    x = 362,434,899.12/20,732.51
  6. Step 6: Final answer
    x = 17,481.48

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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.