Home / 13,899.90-20,860.82-5,137.32

Finding the Fourth Proportional to 13,899.90, 20,860.82 and 5,137.32

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Solution

The fourth proportional to 13,899.90, 20,860.82 and 5,137.32 is: 7,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.90 : 20,860.82 = 5,137.32 : x
  2. Step 2: Convert to fraction form
    13,899.90/20,860.82 = 5,137.32/x
  3. Step 3: Cross multiply
    13,899.90x = 20,860.82 × 5,137.32
  4. Step 4: Simplify right side
    13,899.90x = 107,168,682.12
  5. Step 5: Solve for x
    x = 107,168,682.12/13,899.90
  6. Step 6: Final answer
    x = 7,710.03

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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.