Home / 20,558.37-30,819.72-10,013.76

Finding the Fourth Proportional to 20,558.37, 30,819.72 and 10,013.76

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Solution

The fourth proportional to 20,558.37, 30,819.72 and 10,013.76 is: 15,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.37 : 30,819.72 = 10,013.76 : x
  2. Step 2: Convert to fraction form
    20,558.37/30,819.72 = 10,013.76/x
  3. Step 3: Cross multiply
    20,558.37x = 30,819.72 × 10,013.76
  4. Step 4: Simplify right side
    20,558.37x = 308,621,279.35
  5. Step 5: Solve for x
    x = 308,621,279.35/20,558.37
  6. Step 6: Final answer
    x = 15,011.95

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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.