Home / 25,938.21-38,919.46-12,783.40

Finding the Fourth Proportional to 25,938.21, 38,919.46 and 12,783.40

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Solution

The fourth proportional to 25,938.21, 38,919.46 and 12,783.40 is: 19,181.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,938.21 : 38,919.46 = 12,783.40 : x
  2. Step 2: Convert to fraction form
    25,938.21/38,919.46 = 12,783.40/x
  3. Step 3: Cross multiply
    25,938.21x = 38,919.46 × 12,783.40
  4. Step 4: Simplify right side
    25,938.21x = 497,522,961.05
  5. Step 5: Solve for x
    x = 497,522,961.05/25,938.21
  6. Step 6: Final answer
    x = 19,181.09

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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.