Home / 18,999.09-28,465.92-13,443.30

Finding the Fourth Proportional to 18,999.09, 28,465.92 and 13,443.30

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Solution

The fourth proportional to 18,999.09, 28,465.92 and 13,443.30 is: 20,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.09 : 28,465.92 = 13,443.30 : x
  2. Step 2: Convert to fraction form
    18,999.09/28,465.92 = 13,443.30/x
  3. Step 3: Cross multiply
    18,999.09x = 28,465.92 × 13,443.30
  4. Step 4: Simplify right side
    18,999.09x = 382,675,902.34
  5. Step 5: Solve for x
    x = 382,675,902.34/18,999.09
  6. Step 6: Final answer
    x = 20,141.80

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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.