Home / 20,491.98-28,392.36-20,049.18

Finding the Fourth Proportional to 20,491.98, 28,392.36 and 20,049.18

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Solution

The fourth proportional to 20,491.98, 28,392.36 and 20,049.18 is: 27,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.98 : 28,392.36 = 20,049.18 : x
  2. Step 2: Convert to fraction form
    20,491.98/28,392.36 = 20,049.18/x
  3. Step 3: Cross multiply
    20,491.98x = 28,392.36 × 20,049.18
  4. Step 4: Simplify right side
    20,491.98x = 569,243,536.26
  5. Step 5: Solve for x
    x = 569,243,536.26/20,491.98
  6. Step 6: Final answer
    x = 27,778.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.