Home / 10,215.36-15,322.73-2,820.27

Finding the Fourth Proportional to 10,215.36, 15,322.73 and 2,820.27

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Solution

The fourth proportional to 10,215.36, 15,322.73 and 2,820.27 is: 4,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.36 : 15,322.73 = 2,820.27 : x
  2. Step 2: Convert to fraction form
    10,215.36/15,322.73 = 2,820.27/x
  3. Step 3: Cross multiply
    10,215.36x = 15,322.73 × 2,820.27
  4. Step 4: Simplify right side
    10,215.36x = 43,214,221.64
  5. Step 5: Solve for x
    x = 43,214,221.64/10,215.36
  6. Step 6: Final answer
    x = 4,230.32

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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.