Home / 28,165.24-38,867.43-15,418.09

Finding the Fourth Proportional to 28,165.24, 38,867.43 and 15,418.09

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Solution

The fourth proportional to 28,165.24, 38,867.43 and 15,418.09 is: 21,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.24 : 38,867.43 = 15,418.09 : x
  2. Step 2: Convert to fraction form
    28,165.24/38,867.43 = 15,418.09/x
  3. Step 3: Cross multiply
    28,165.24x = 38,867.43 × 15,418.09
  4. Step 4: Simplify right side
    28,165.24x = 599,261,533.81
  5. Step 5: Solve for x
    x = 599,261,533.81/28,165.24
  6. Step 6: Final answer
    x = 21,276.64

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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.