Home / 21,804.39-30,089.48-12,372.75

Finding the Fourth Proportional to 21,804.39, 30,089.48 and 12,372.75

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Solution

The fourth proportional to 21,804.39, 30,089.48 and 12,372.75 is: 17,074.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.39 : 30,089.48 = 12,372.75 : x
  2. Step 2: Convert to fraction form
    21,804.39/30,089.48 = 12,372.75/x
  3. Step 3: Cross multiply
    21,804.39x = 30,089.48 × 12,372.75
  4. Step 4: Simplify right side
    21,804.39x = 372,289,551.81
  5. Step 5: Solve for x
    x = 372,289,551.81/21,804.39
  6. Step 6: Final answer
    x = 17,074.06

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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.