Home / 22,615.44-31,231.08-15,558.72

Finding the Fourth Proportional to 22,615.44, 31,231.08 and 15,558.72

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Solution

The fourth proportional to 22,615.44, 31,231.08 and 15,558.72 is: 21,486.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.44 : 31,231.08 = 15,558.72 : x
  2. Step 2: Convert to fraction form
    22,615.44/31,231.08 = 15,558.72/x
  3. Step 3: Cross multiply
    22,615.44x = 31,231.08 × 15,558.72
  4. Step 4: Simplify right side
    22,615.44x = 485,915,629.02
  5. Step 5: Solve for x
    x = 485,915,629.02/22,615.44
  6. Step 6: Final answer
    x = 21,486.01

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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.