Home / 18,846.32-25,999.40-12,129.53

Finding the Fourth Proportional to 18,846.32, 25,999.40 and 12,129.53

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Solution

The fourth proportional to 18,846.32, 25,999.40 and 12,129.53 is: 16,733.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.32 : 25,999.40 = 12,129.53 : x
  2. Step 2: Convert to fraction form
    18,846.32/25,999.40 = 12,129.53/x
  3. Step 3: Cross multiply
    18,846.32x = 25,999.40 × 12,129.53
  4. Step 4: Simplify right side
    18,846.32x = 315,360,441.63
  5. Step 5: Solve for x
    x = 315,360,441.63/18,846.32
  6. Step 6: Final answer
    x = 16,733.26

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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.