Home / 13,415.10-20,106.45-6,837.90

Finding the Fourth Proportional to 13,415.10, 20,106.45 and 6,837.90

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Solution

The fourth proportional to 13,415.10, 20,106.45 and 6,837.90 is: 10,248.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.10 : 20,106.45 = 6,837.90 : x
  2. Step 2: Convert to fraction form
    13,415.10/20,106.45 = 6,837.90/x
  3. Step 3: Cross multiply
    13,415.10x = 20,106.45 × 6,837.90
  4. Step 4: Simplify right side
    13,415.10x = 137,485,894.46
  5. Step 5: Solve for x
    x = 137,485,894.46/13,415.10
  6. Step 6: Final answer
    x = 10,248.59

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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.