Home / 30,047.30-41,387.62-20,956.56

Finding the Fourth Proportional to 30,047.30, 41,387.62 and 20,956.56

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Solution

The fourth proportional to 30,047.30, 41,387.62 and 20,956.56 is: 28,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,047.30 : 41,387.62 = 20,956.56 : x
  2. Step 2: Convert to fraction form
    30,047.30/41,387.62 = 20,956.56/x
  3. Step 3: Cross multiply
    30,047.30x = 41,387.62 × 20,956.56
  4. Step 4: Simplify right side
    30,047.30x = 867,342,141.79
  5. Step 5: Solve for x
    x = 867,342,141.79/30,047.30
  6. Step 6: Final answer
    x = 28,865.89

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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.