Home / 14,198.80-21,298.20-7,200.40

Finding the Fourth Proportional to 14,198.80, 21,298.20 and 7,200.40

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Solution

The fourth proportional to 14,198.80, 21,298.20 and 7,200.40 is: 10,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,198.80 : 21,298.20 = 7,200.40 : x
  2. Step 2: Convert to fraction form
    14,198.80/21,298.20 = 7,200.40/x
  3. Step 3: Cross multiply
    14,198.80x = 21,298.20 × 7,200.40
  4. Step 4: Simplify right side
    14,198.80x = 153,355,559.28
  5. Step 5: Solve for x
    x = 153,355,559.28/14,198.80
  6. Step 6: Final answer
    x = 10,800.60

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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.