Home / 13,919.60-20,881.70-6,899.94

Finding the Fourth Proportional to 13,919.60, 20,881.70 and 6,899.94

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Solution

The fourth proportional to 13,919.60, 20,881.70 and 6,899.94 is: 10,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.60 : 20,881.70 = 6,899.94 : x
  2. Step 2: Convert to fraction form
    13,919.60/20,881.70 = 6,899.94/x
  3. Step 3: Cross multiply
    13,919.60x = 20,881.70 × 6,899.94
  4. Step 4: Simplify right side
    13,919.60x = 144,082,477.10
  5. Step 5: Solve for x
    x = 144,082,477.10/13,919.60
  6. Step 6: Final answer
    x = 10,351.05

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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.