Home / 10,215.54-15,322.16-2,821.05

Finding the Fourth Proportional to 10,215.54, 15,322.16 and 2,821.05

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Solution

The fourth proportional to 10,215.54, 15,322.16 and 2,821.05 is: 4,231.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.54 : 15,322.16 = 2,821.05 : x
  2. Step 2: Convert to fraction form
    10,215.54/15,322.16 = 2,821.05/x
  3. Step 3: Cross multiply
    10,215.54x = 15,322.16 × 2,821.05
  4. Step 4: Simplify right side
    10,215.54x = 43,224,579.47
  5. Step 5: Solve for x
    x = 43,224,579.47/10,215.54
  6. Step 6: Final answer
    x = 4,231.26

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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.