Home / 27,982.98-38,619.23-20,897.10

Finding the Fourth Proportional to 27,982.98, 38,619.23 and 20,897.10

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Solution

The fourth proportional to 27,982.98, 38,619.23 and 20,897.10 is: 28,840.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.98 : 38,619.23 = 20,897.10 : x
  2. Step 2: Convert to fraction form
    27,982.98/38,619.23 = 20,897.10/x
  3. Step 3: Cross multiply
    27,982.98x = 38,619.23 × 20,897.10
  4. Step 4: Simplify right side
    27,982.98x = 807,029,866.93
  5. Step 5: Solve for x
    x = 807,029,866.93/27,982.98
  6. Step 6: Final answer
    x = 28,840.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.