Home / 28,181.59-38,890.60-15,435.57

Finding the Fourth Proportional to 28,181.59, 38,890.60 and 15,435.57

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Solution

The fourth proportional to 28,181.59, 38,890.60 and 15,435.57 is: 21,301.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.59 : 38,890.60 = 15,435.57 : x
  2. Step 2: Convert to fraction form
    28,181.59/38,890.60 = 15,435.57/x
  3. Step 3: Cross multiply
    28,181.59x = 38,890.60 × 15,435.57
  4. Step 4: Simplify right side
    28,181.59x = 600,298,540.05
  5. Step 5: Solve for x
    x = 600,298,540.05/28,181.59
  6. Step 6: Final answer
    x = 21,301.09

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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.