Home / 13,318.21-18,458.49-13,069.10

Finding the Fourth Proportional to 13,318.21, 18,458.49 and 13,069.10

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Solution

The fourth proportional to 13,318.21, 18,458.49 and 13,069.10 is: 18,113.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.21 : 18,458.49 = 13,069.10 : x
  2. Step 2: Convert to fraction form
    13,318.21/18,458.49 = 13,069.10/x
  3. Step 3: Cross multiply
    13,318.21x = 18,458.49 × 13,069.10
  4. Step 4: Simplify right side
    13,318.21x = 241,235,778.66
  5. Step 5: Solve for x
    x = 241,235,778.66/13,318.21
  6. Step 6: Final answer
    x = 18,113.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.