Home / 10,155.42-15,231.54-3,580.64

Finding the Fourth Proportional to 10,155.42, 15,231.54 and 3,580.64

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Solution

The fourth proportional to 10,155.42, 15,231.54 and 3,580.64 is: 5,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.42 : 15,231.54 = 3,580.64 : x
  2. Step 2: Convert to fraction form
    10,155.42/15,231.54 = 3,580.64/x
  3. Step 3: Cross multiply
    10,155.42x = 15,231.54 × 3,580.64
  4. Step 4: Simplify right side
    10,155.42x = 54,538,661.39
  5. Step 5: Solve for x
    x = 54,538,661.39/10,155.42
  6. Step 6: Final answer
    x = 5,370.40

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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.