Home / 18,887.73-28,306.95-7,783.25

Finding the Fourth Proportional to 18,887.73, 28,306.95 and 7,783.25

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Solution

The fourth proportional to 18,887.73, 28,306.95 and 7,783.25 is: 11,664.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.73 : 28,306.95 = 7,783.25 : x
  2. Step 2: Convert to fraction form
    18,887.73/28,306.95 = 7,783.25/x
  3. Step 3: Cross multiply
    18,887.73x = 28,306.95 × 7,783.25
  4. Step 4: Simplify right side
    18,887.73x = 220,319,927.05
  5. Step 5: Solve for x
    x = 220,319,927.05/18,887.73
  6. Step 6: Final answer
    x = 11,664.71

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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.