Home / 27,983.98-38,620.61-20,898.10

Finding the Fourth Proportional to 27,983.98, 38,620.61 and 20,898.10

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Solution

The fourth proportional to 27,983.98, 38,620.61 and 20,898.10 is: 28,841.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,983.98 : 38,620.61 = 20,898.10 : x
  2. Step 2: Convert to fraction form
    27,983.98/38,620.61 = 20,898.10/x
  3. Step 3: Cross multiply
    27,983.98x = 38,620.61 × 20,898.10
  4. Step 4: Simplify right side
    27,983.98x = 807,097,369.84
  5. Step 5: Solve for x
    x = 807,097,369.84/27,983.98
  6. Step 6: Final answer
    x = 28,841.41

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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.