Home / 10,206.80-15,309.30-2,810.60

Finding the Fourth Proportional to 10,206.80, 15,309.30 and 2,810.60

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Solution

The fourth proportional to 10,206.80, 15,309.30 and 2,810.60 is: 4,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,206.80 : 15,309.30 = 2,810.60 : x
  2. Step 2: Convert to fraction form
    10,206.80/15,309.30 = 2,810.60/x
  3. Step 3: Cross multiply
    10,206.80x = 15,309.30 × 2,810.60
  4. Step 4: Simplify right side
    10,206.80x = 43,028,318.58
  5. Step 5: Solve for x
    x = 43,028,318.58/10,206.80
  6. Step 6: Final answer
    x = 4,215.65

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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.