Home / 18,901.55-28,348.89-5,571.79

Finding the Fourth Proportional to 18,901.55, 28,348.89 and 5,571.79

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Solution

The fourth proportional to 18,901.55, 28,348.89 and 5,571.79 is: 8,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.55 : 28,348.89 = 5,571.79 : x
  2. Step 2: Convert to fraction form
    18,901.55/28,348.89 = 5,571.79/x
  3. Step 3: Cross multiply
    18,901.55x = 28,348.89 × 5,571.79
  4. Step 4: Simplify right side
    18,901.55x = 157,953,970.05
  5. Step 5: Solve for x
    x = 157,953,970.05/18,901.55
  6. Step 6: Final answer
    x = 8,356.67

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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.