Home / 13,918.74-20,884.80-6,899.40

Finding the Fourth Proportional to 13,918.74, 20,884.80 and 6,899.40

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Solution

The fourth proportional to 13,918.74, 20,884.80 and 6,899.40 is: 10,352.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.74 : 20,884.80 = 6,899.40 : x
  2. Step 2: Convert to fraction form
    13,918.74/20,884.80 = 6,899.40/x
  3. Step 3: Cross multiply
    13,918.74x = 20,884.80 × 6,899.40
  4. Step 4: Simplify right side
    13,918.74x = 144,092,589.12
  5. Step 5: Solve for x
    x = 144,092,589.12/13,918.74
  6. Step 6: Final answer
    x = 10,352.42

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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.