Home / 12,587.96-18,840.85-9,255.33

Finding the Fourth Proportional to 12,587.96, 18,840.85 and 9,255.33

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Solution

The fourth proportional to 12,587.96, 18,840.85 and 9,255.33 is: 13,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.96 : 18,840.85 = 9,255.33 : x
  2. Step 2: Convert to fraction form
    12,587.96/18,840.85 = 9,255.33/x
  3. Step 3: Cross multiply
    12,587.96x = 18,840.85 × 9,255.33
  4. Step 4: Simplify right side
    12,587.96x = 174,378,261.09
  5. Step 5: Solve for x
    x = 174,378,261.09/12,587.96
  6. Step 6: Final answer
    x = 13,852.78

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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.