Home / 18,873.42-28,313.70-6,390.09

Finding the Fourth Proportional to 18,873.42, 28,313.70 and 6,390.09

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Solution

The fourth proportional to 18,873.42, 28,313.70 and 6,390.09 is: 9,586.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.42 : 28,313.70 = 6,390.09 : x
  2. Step 2: Convert to fraction form
    18,873.42/28,313.70 = 6,390.09/x
  3. Step 3: Cross multiply
    18,873.42x = 28,313.70 × 6,390.09
  4. Step 4: Simplify right side
    18,873.42x = 180,927,091.23
  5. Step 5: Solve for x
    x = 180,927,091.23/18,873.42
  6. Step 6: Final answer
    x = 9,586.34

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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.