Home / 27,890.55-38,489.25-15,143.85

Finding the Fourth Proportional to 27,890.55, 38,489.25 and 15,143.85

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Solution

The fourth proportional to 27,890.55, 38,489.25 and 15,143.85 is: 20,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.55 : 38,489.25 = 15,143.85 : x
  2. Step 2: Convert to fraction form
    27,890.55/38,489.25 = 15,143.85/x
  3. Step 3: Cross multiply
    27,890.55x = 38,489.25 × 15,143.85
  4. Step 4: Simplify right side
    27,890.55x = 582,875,352.89
  5. Step 5: Solve for x
    x = 582,875,352.89/27,890.55
  6. Step 6: Final answer
    x = 20,898.67

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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.