Home / 13,611.66-20,421.59-11,261.04

Finding the Fourth Proportional to 13,611.66, 20,421.59 and 11,261.04

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Solution

The fourth proportional to 13,611.66, 20,421.59 and 11,261.04 is: 16,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.66 : 20,421.59 = 11,261.04 : x
  2. Step 2: Convert to fraction form
    13,611.66/20,421.59 = 11,261.04/x
  3. Step 3: Cross multiply
    13,611.66x = 20,421.59 × 11,261.04
  4. Step 4: Simplify right side
    13,611.66x = 229,968,285.55
  5. Step 5: Solve for x
    x = 229,968,285.55/13,611.66
  6. Step 6: Final answer
    x = 16,894.95

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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.