Home / 26,861.23-40,291.80-7,139.79

Finding the Fourth Proportional to 26,861.23, 40,291.80 and 7,139.79

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Solution

The fourth proportional to 26,861.23, 40,291.80 and 7,139.79 is: 10,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,861.23 : 40,291.80 = 7,139.79 : x
  2. Step 2: Convert to fraction form
    26,861.23/40,291.80 = 7,139.79/x
  3. Step 3: Cross multiply
    26,861.23x = 40,291.80 × 7,139.79
  4. Step 4: Simplify right side
    26,861.23x = 287,674,839.63
  5. Step 5: Solve for x
    x = 287,674,839.63/26,861.23
  6. Step 6: Final answer
    x = 10,709.67

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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.