Home / 13,679.26-20,528.88-12,862.78

Finding the Fourth Proportional to 13,679.26, 20,528.88 and 12,862.78

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Solution

The fourth proportional to 13,679.26, 20,528.88 and 12,862.78 is: 19,303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.26 : 20,528.88 = 12,862.78 : x
  2. Step 2: Convert to fraction form
    13,679.26/20,528.88 = 12,862.78/x
  3. Step 3: Cross multiply
    13,679.26x = 20,528.88 × 12,862.78
  4. Step 4: Simplify right side
    13,679.26x = 264,058,467.09
  5. Step 5: Solve for x
    x = 264,058,467.09/13,679.26
  6. Step 6: Final answer
    x = 19,303.56

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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.