Home / 28,642.76-42,936.80-11,106.68

Finding the Fourth Proportional to 28,642.76, 42,936.80 and 11,106.68

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Solution

The fourth proportional to 28,642.76, 42,936.80 and 11,106.68 is: 16,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.76 : 42,936.80 = 11,106.68 : x
  2. Step 2: Convert to fraction form
    28,642.76/42,936.80 = 11,106.68/x
  3. Step 3: Cross multiply
    28,642.76x = 42,936.80 × 11,106.68
  4. Step 4: Simplify right side
    28,642.76x = 476,885,297.82
  5. Step 5: Solve for x
    x = 476,885,297.82/28,642.76
  6. Step 6: Final answer
    x = 16,649.42

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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.