Home / 21,790.53-32,697.68-8,643.33

Finding the Fourth Proportional to 21,790.53, 32,697.68 and 8,643.33

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Solution

The fourth proportional to 21,790.53, 32,697.68 and 8,643.33 is: 12,969.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.53 : 32,697.68 = 8,643.33 : x
  2. Step 2: Convert to fraction form
    21,790.53/32,697.68 = 8,643.33/x
  3. Step 3: Cross multiply
    21,790.53x = 32,697.68 × 8,643.33
  4. Step 4: Simplify right side
    21,790.53x = 282,616,795.26
  5. Step 5: Solve for x
    x = 282,616,795.26/21,790.53
  6. Step 6: Final answer
    x = 12,969.71

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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.