Home / 20,529.50-30,798.87-7,381.88

Finding the Fourth Proportional to 20,529.50, 30,798.87 and 7,381.88

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Solution

The fourth proportional to 20,529.50, 30,798.87 and 7,381.88 is: 11,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.50 : 30,798.87 = 7,381.88 : x
  2. Step 2: Convert to fraction form
    20,529.50/30,798.87 = 7,381.88/x
  3. Step 3: Cross multiply
    20,529.50x = 30,798.87 × 7,381.88
  4. Step 4: Simplify right side
    20,529.50x = 227,353,408.48
  5. Step 5: Solve for x
    x = 227,353,408.48/20,529.50
  6. Step 6: Final answer
    x = 11,074.47

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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.