Home / 19,091.79-28,638.54-5,240.79

Finding the Fourth Proportional to 19,091.79, 28,638.54 and 5,240.79

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Solution

The fourth proportional to 19,091.79, 28,638.54 and 5,240.79 is: 7,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.79 : 28,638.54 = 5,240.79 : x
  2. Step 2: Convert to fraction form
    19,091.79/28,638.54 = 5,240.79/x
  3. Step 3: Cross multiply
    19,091.79x = 28,638.54 × 5,240.79
  4. Step 4: Simplify right side
    19,091.79x = 150,088,574.05
  5. Step 5: Solve for x
    x = 150,088,574.05/19,091.79
  6. Step 6: Final answer
    x = 7,861.42

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1.5x scale

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.