Home / 13,899.60-20,849.40-11,955.60

Finding the Fourth Proportional to 13,899.60, 20,849.40 and 11,955.60

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Solution

The fourth proportional to 13,899.60, 20,849.40 and 11,955.60 is: 17,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.60 : 20,849.40 = 11,955.60 : x
  2. Step 2: Convert to fraction form
    13,899.60/20,849.40 = 11,955.60/x
  3. Step 3: Cross multiply
    13,899.60x = 20,849.40 × 11,955.60
  4. Step 4: Simplify right side
    13,899.60x = 249,267,086.64
  5. Step 5: Solve for x
    x = 249,267,086.64/13,899.60
  6. Step 6: Final answer
    x = 17,933.40

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Similar ratio
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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.