Home / 13,465.80-20,198.70-8,557.20

Finding the Fourth Proportional to 13,465.80, 20,198.70 and 8,557.20

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Solution

The fourth proportional to 13,465.80, 20,198.70 and 8,557.20 is: 12,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.80 : 20,198.70 = 8,557.20 : x
  2. Step 2: Convert to fraction form
    13,465.80/20,198.70 = 8,557.20/x
  3. Step 3: Cross multiply
    13,465.80x = 20,198.70 × 8,557.20
  4. Step 4: Simplify right side
    13,465.80x = 172,844,315.64
  5. Step 5: Solve for x
    x = 172,844,315.64/13,465.80
  6. Step 6: Final answer
    x = 12,835.80

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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.