Home / 20,581.08-30,871.38-4,998.72

Finding the Fourth Proportional to 20,581.08, 30,871.38 and 4,998.72

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Solution

The fourth proportional to 20,581.08, 30,871.38 and 4,998.72 is: 7,498.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.08 : 30,871.38 = 4,998.72 : x
  2. Step 2: Convert to fraction form
    20,581.08/30,871.38 = 4,998.72/x
  3. Step 3: Cross multiply
    20,581.08x = 30,871.38 × 4,998.72
  4. Step 4: Simplify right side
    20,581.08x = 154,317,384.63
  5. Step 5: Solve for x
    x = 154,317,384.63/20,581.08
  6. Step 6: Final answer
    x = 7,498.02

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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.