Home / 18,905.12-28,324.77-13,270.83

Finding the Fourth Proportional to 18,905.12, 28,324.77 and 13,270.83

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Solution

The fourth proportional to 18,905.12, 28,324.77 and 13,270.83 is: 19,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.12 : 28,324.77 = 13,270.83 : x
  2. Step 2: Convert to fraction form
    18,905.12/28,324.77 = 13,270.83/x
  3. Step 3: Cross multiply
    18,905.12x = 28,324.77 × 13,270.83
  4. Step 4: Simplify right side
    18,905.12x = 375,893,207.46
  5. Step 5: Solve for x
    x = 375,893,207.46/18,905.12
  6. Step 6: Final answer
    x = 19,883.14

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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.