Home / 18,444.36-25,445.70-12,858.60

Finding the Fourth Proportional to 18,444.36, 25,445.70 and 12,858.60

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Solution

The fourth proportional to 18,444.36, 25,445.70 and 12,858.60 is: 17,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,444.36 : 25,445.70 = 12,858.60 : x
  2. Step 2: Convert to fraction form
    18,444.36/25,445.70 = 12,858.60/x
  3. Step 3: Cross multiply
    18,444.36x = 25,445.70 × 12,858.60
  4. Step 4: Simplify right side
    18,444.36x = 327,196,078.02
  5. Step 5: Solve for x
    x = 327,196,078.02/18,444.36
  6. Step 6: Final answer
    x = 17,739.63

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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.