Home / 19,709.40-27,199.02-12,635.84

Finding the Fourth Proportional to 19,709.40, 27,199.02 and 12,635.84

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Solution

The fourth proportional to 19,709.40, 27,199.02 and 12,635.84 is: 17,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.40 : 27,199.02 = 12,635.84 : x
  2. Step 2: Convert to fraction form
    19,709.40/27,199.02 = 12,635.84/x
  3. Step 3: Cross multiply
    19,709.40x = 27,199.02 × 12,635.84
  4. Step 4: Simplify right side
    19,709.40x = 343,682,464.88
  5. Step 5: Solve for x
    x = 343,682,464.88/19,709.40
  6. Step 6: Final answer
    x = 17,437.49

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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.