Home / 18,923.43-28,398.33-7,830.21

Finding the Fourth Proportional to 18,923.43, 28,398.33 and 7,830.21

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Solution

The fourth proportional to 18,923.43, 28,398.33 and 7,830.21 is: 11,750.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.43 : 28,398.33 = 7,830.21 : x
  2. Step 2: Convert to fraction form
    18,923.43/28,398.33 = 7,830.21/x
  3. Step 3: Cross multiply
    18,923.43x = 28,398.33 × 7,830.21
  4. Step 4: Simplify right side
    18,923.43x = 222,364,887.55
  5. Step 5: Solve for x
    x = 222,364,887.55/18,923.43
  6. Step 6: Final answer
    x = 11,750.77

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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.