Home / 18,906.40-28,359.60-4,866.45

Finding the Fourth Proportional to 18,906.40, 28,359.60 and 4,866.45

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Solution

The fourth proportional to 18,906.40, 28,359.60 and 4,866.45 is: 7,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.40 : 28,359.60 = 4,866.45 : x
  2. Step 2: Convert to fraction form
    18,906.40/28,359.60 = 4,866.45/x
  3. Step 3: Cross multiply
    18,906.40x = 28,359.60 × 4,866.45
  4. Step 4: Simplify right side
    18,906.40x = 138,010,575.42
  5. Step 5: Solve for x
    x = 138,010,575.42/18,906.40
  6. Step 6: Final answer
    x = 7,299.68

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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.