Home / 13,655.95-20,479.89-6,988.34

Finding the Fourth Proportional to 13,655.95, 20,479.89 and 6,988.34

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Solution

The fourth proportional to 13,655.95, 20,479.89 and 6,988.34 is: 10,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.95 : 20,479.89 = 6,988.34 : x
  2. Step 2: Convert to fraction form
    13,655.95/20,479.89 = 6,988.34/x
  3. Step 3: Cross multiply
    13,655.95x = 20,479.89 × 6,988.34
  4. Step 4: Simplify right side
    13,655.95x = 143,120,396.69
  5. Step 5: Solve for x
    x = 143,120,396.69/13,655.95
  6. Step 6: Final answer
    x = 10,480.44

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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.