Home / 11,438.61-17,157.40-3,118.63

Finding the Fourth Proportional to 11,438.61, 17,157.40 and 3,118.63

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Solution

The fourth proportional to 11,438.61, 17,157.40 and 3,118.63 is: 4,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.61 : 17,157.40 = 3,118.63 : x
  2. Step 2: Convert to fraction form
    11,438.61/17,157.40 = 3,118.63/x
  3. Step 3: Cross multiply
    11,438.61x = 17,157.40 × 3,118.63
  4. Step 4: Simplify right side
    11,438.61x = 53,507,496.58
  5. Step 5: Solve for x
    x = 53,507,496.58/11,438.61
  6. Step 6: Final answer
    x = 4,677.80

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1.5x scale

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.