Home / 18,900.55-28,345.74-5,749.39

Finding the Fourth Proportional to 18,900.55, 28,345.74 and 5,749.39

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Solution

The fourth proportional to 18,900.55, 28,345.74 and 5,749.39 is: 8,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.55 : 28,345.74 = 5,749.39 : x
  2. Step 2: Convert to fraction form
    18,900.55/28,345.74 = 5,749.39/x
  3. Step 3: Cross multiply
    18,900.55x = 28,345.74 × 5,749.39
  4. Step 4: Simplify right side
    18,900.55x = 162,970,714.10
  5. Step 5: Solve for x
    x = 162,970,714.10/18,900.55
  6. Step 6: Final answer
    x = 8,622.54

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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.