Home / 18,626.53-25,705.11-10,129.22

Finding the Fourth Proportional to 18,626.53, 25,705.11 and 10,129.22

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Solution

The fourth proportional to 18,626.53, 25,705.11 and 10,129.22 is: 13,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.53 : 25,705.11 = 10,129.22 : x
  2. Step 2: Convert to fraction form
    18,626.53/25,705.11 = 10,129.22/x
  3. Step 3: Cross multiply
    18,626.53x = 25,705.11 × 10,129.22
  4. Step 4: Simplify right side
    18,626.53x = 260,372,714.31
  5. Step 5: Solve for x
    x = 260,372,714.31/18,626.53
  6. Step 6: Final answer
    x = 13,978.59

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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.