Home / 13,515.36-20,243.88-13,184.88

Finding the Fourth Proportional to 13,515.36, 20,243.88 and 13,184.88

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Solution

The fourth proportional to 13,515.36, 20,243.88 and 13,184.88 is: 19,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.36 : 20,243.88 = 13,184.88 : x
  2. Step 2: Convert to fraction form
    13,515.36/20,243.88 = 13,184.88/x
  3. Step 3: Cross multiply
    13,515.36x = 20,243.88 × 13,184.88
  4. Step 4: Simplify right side
    13,515.36x = 266,913,128.53
  5. Step 5: Solve for x
    x = 266,913,128.53/13,515.36
  6. Step 6: Final answer
    x = 19,748.87

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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.