Home / 28,245.36-38,980.08-15,670.56

Finding the Fourth Proportional to 28,245.36, 38,980.08 and 15,670.56

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Solution

The fourth proportional to 28,245.36, 38,980.08 and 15,670.56 is: 21,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.36 : 38,980.08 = 15,670.56 : x
  2. Step 2: Convert to fraction form
    28,245.36/38,980.08 = 15,670.56/x
  3. Step 3: Cross multiply
    28,245.36x = 38,980.08 × 15,670.56
  4. Step 4: Simplify right side
    28,245.36x = 610,839,682.44
  5. Step 5: Solve for x
    x = 610,839,682.44/28,245.36
  6. Step 6: Final answer
    x = 21,626.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.