Home / 18,712.03-28,043.73-7,605.79

Finding the Fourth Proportional to 18,712.03, 28,043.73 and 7,605.79

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Solution

The fourth proportional to 18,712.03, 28,043.73 and 7,605.79 is: 11,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.03 : 28,043.73 = 7,605.79 : x
  2. Step 2: Convert to fraction form
    18,712.03/28,043.73 = 7,605.79/x
  3. Step 3: Cross multiply
    18,712.03x = 28,043.73 × 7,605.79
  4. Step 4: Simplify right side
    18,712.03x = 213,294,721.20
  5. Step 5: Solve for x
    x = 213,294,721.20/18,712.03
  6. Step 6: Final answer
    x = 11,398.80

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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.