Home / 18,982.09-28,456.93-13,417.93

Finding the Fourth Proportional to 18,982.09, 28,456.93 and 13,417.93

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Solution

The fourth proportional to 18,982.09, 28,456.93 and 13,417.93 is: 20,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.09 : 28,456.93 = 13,417.93 : x
  2. Step 2: Convert to fraction form
    18,982.09/28,456.93 = 13,417.93/x
  3. Step 3: Cross multiply
    18,982.09x = 28,456.93 × 13,417.93
  4. Step 4: Simplify right side
    18,982.09x = 381,832,990.07
  5. Step 5: Solve for x
    x = 381,832,990.07/18,982.09
  6. Step 6: Final answer
    x = 20,115.44

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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.