Home / 18,438.98-25,445.36-11,268.86

Finding the Fourth Proportional to 18,438.98, 25,445.36 and 11,268.86

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Solution

The fourth proportional to 18,438.98, 25,445.36 and 11,268.86 is: 15,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.98 : 25,445.36 = 11,268.86 : x
  2. Step 2: Convert to fraction form
    18,438.98/25,445.36 = 11,268.86/x
  3. Step 3: Cross multiply
    18,438.98x = 25,445.36 × 11,268.86
  4. Step 4: Simplify right side
    18,438.98x = 286,740,291.28
  5. Step 5: Solve for x
    x = 286,740,291.28/18,438.98
  6. Step 6: Final answer
    x = 15,550.77

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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.