Home / 10,843.20-16,221.60-9,806.40

Finding the Fourth Proportional to 10,843.20, 16,221.60 and 9,806.40

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Solution

The fourth proportional to 10,843.20, 16,221.60 and 9,806.40 is: 14,670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,843.20 : 16,221.60 = 9,806.40 : x
  2. Step 2: Convert to fraction form
    10,843.20/16,221.60 = 9,806.40/x
  3. Step 3: Cross multiply
    10,843.20x = 16,221.60 × 9,806.40
  4. Step 4: Simplify right side
    10,843.20x = 159,075,498.24
  5. Step 5: Solve for x
    x = 159,075,498.24/10,843.20
  6. Step 6: Final answer
    x = 14,670.53

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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.