Home / 18,739.08-28,108.62-4,887

Finding the Fourth Proportional to 18,739.08, 28,108.62 and 4,887

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Solution

The fourth proportional to 18,739.08, 28,108.62 and 4,887 is: 7,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.08 : 28,108.62 = 4,887 : x
  2. Step 2: Convert to fraction form
    18,739.08/28,108.62 = 4,887/x
  3. Step 3: Cross multiply
    18,739.08x = 28,108.62 × 4,887
  4. Step 4: Simplify right side
    18,739.08x = 137,366,825.94
  5. Step 5: Solve for x
    x = 137,366,825.94/18,739.08
  6. Step 6: Final answer
    x = 7,330.50

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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.