Home / 21,352.80-32,017.20-8,205.60

Finding the Fourth Proportional to 21,352.80, 32,017.20 and 8,205.60

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Solution

The fourth proportional to 21,352.80, 32,017.20 and 8,205.60 is: 12,303.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.80 : 32,017.20 = 8,205.60 : x
  2. Step 2: Convert to fraction form
    21,352.80/32,017.20 = 8,205.60/x
  3. Step 3: Cross multiply
    21,352.80x = 32,017.20 × 8,205.60
  4. Step 4: Simplify right side
    21,352.80x = 262,720,336.32
  5. Step 5: Solve for x
    x = 262,720,336.32/21,352.80
  6. Step 6: Final answer
    x = 12,303.79

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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.