Home / 13,788.36-20,685.78-5,999.40

Finding the Fourth Proportional to 13,788.36, 20,685.78 and 5,999.40

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Solution

The fourth proportional to 13,788.36, 20,685.78 and 5,999.40 is: 9,000.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.36 : 20,685.78 = 5,999.40 : x
  2. Step 2: Convert to fraction form
    13,788.36/20,685.78 = 5,999.40/x
  3. Step 3: Cross multiply
    13,788.36x = 20,685.78 × 5,999.40
  4. Step 4: Simplify right side
    13,788.36x = 124,102,268.53
  5. Step 5: Solve for x
    x = 124,102,268.53/13,788.36
  6. Step 6: Final answer
    x = 9,000.51

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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.