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Finding the Fourth Proportional to 12,611.55, 17,403.80 and 6,946.19

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Solution

The fourth proportional to 12,611.55, 17,403.80 and 6,946.19 is: 9,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.55 : 17,403.80 = 6,946.19 : x
  2. Step 2: Convert to fraction form
    12,611.55/17,403.80 = 6,946.19/x
  3. Step 3: Cross multiply
    12,611.55x = 17,403.80 × 6,946.19
  4. Step 4: Simplify right side
    12,611.55x = 120,890,101.52
  5. Step 5: Solve for x
    x = 120,890,101.52/12,611.55
  6. Step 6: Final answer
    x = 9,585.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.