Home / 19,205.21-28,788.87-9,198.40

Finding the Fourth Proportional to 19,205.21, 28,788.87 and 9,198.40

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Solution

The fourth proportional to 19,205.21, 28,788.87 and 9,198.40 is: 13,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.21 : 28,788.87 = 9,198.40 : x
  2. Step 2: Convert to fraction form
    19,205.21/28,788.87 = 9,198.40/x
  3. Step 3: Cross multiply
    19,205.21x = 28,788.87 × 9,198.40
  4. Step 4: Simplify right side
    19,205.21x = 264,811,541.81
  5. Step 5: Solve for x
    x = 264,811,541.81/19,205.21
  6. Step 6: Final answer
    x = 13,788.53

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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.