Home / 13,905.79-20,860.71-4,043.78

Finding the Fourth Proportional to 13,905.79, 20,860.71 and 4,043.78

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Solution

The fourth proportional to 13,905.79, 20,860.71 and 4,043.78 is: 6,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.79 : 20,860.71 = 4,043.78 : x
  2. Step 2: Convert to fraction form
    13,905.79/20,860.71 = 4,043.78/x
  3. Step 3: Cross multiply
    13,905.79x = 20,860.71 × 4,043.78
  4. Step 4: Simplify right side
    13,905.79x = 84,356,121.88
  5. Step 5: Solve for x
    x = 84,356,121.88/13,905.79
  6. Step 6: Final answer
    x = 6,066.26

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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.