Home / 13,418.64-18,518.36-7,450.29

Finding the Fourth Proportional to 13,418.64, 18,518.36 and 7,450.29

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Solution

The fourth proportional to 13,418.64, 18,518.36 and 7,450.29 is: 10,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.64 : 18,518.36 = 7,450.29 : x
  2. Step 2: Convert to fraction form
    13,418.64/18,518.36 = 7,450.29/x
  3. Step 3: Cross multiply
    13,418.64x = 18,518.36 × 7,450.29
  4. Step 4: Simplify right side
    13,418.64x = 137,967,115.07
  5. Step 5: Solve for x
    x = 137,967,115.07/13,418.64
  6. Step 6: Final answer
    x = 10,281.75

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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.