Home / 13,905.09-20,860.35-6,113.88

Finding the Fourth Proportional to 13,905.09, 20,860.35 and 6,113.88

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Solution

The fourth proportional to 13,905.09, 20,860.35 and 6,113.88 is: 9,172.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.09 : 20,860.35 = 6,113.88 : x
  2. Step 2: Convert to fraction form
    13,905.09/20,860.35 = 6,113.88/x
  3. Step 3: Cross multiply
    13,905.09x = 20,860.35 × 6,113.88
  4. Step 4: Simplify right side
    13,905.09x = 127,537,676.66
  5. Step 5: Solve for x
    x = 127,537,676.66/13,905.09
  6. Step 6: Final answer
    x = 9,172.01

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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.