Home / 13,217.58-18,242.01-8,515.53

Finding the Fourth Proportional to 13,217.58, 18,242.01 and 8,515.53

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Solution

The fourth proportional to 13,217.58, 18,242.01 and 8,515.53 is: 11,752.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.58 : 18,242.01 = 8,515.53 : x
  2. Step 2: Convert to fraction form
    13,217.58/18,242.01 = 8,515.53/x
  3. Step 3: Cross multiply
    13,217.58x = 18,242.01 × 8,515.53
  4. Step 4: Simplify right side
    13,217.58x = 155,340,383.42
  5. Step 5: Solve for x
    x = 155,340,383.42/13,217.58
  6. Step 6: Final answer
    x = 11,752.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.