Home / 11,428.55-15,770.30-6,392.64

Finding the Fourth Proportional to 11,428.55, 15,770.30 and 6,392.64

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Solution

The fourth proportional to 11,428.55, 15,770.30 and 6,392.64 is: 8,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.55 : 15,770.30 = 6,392.64 : x
  2. Step 2: Convert to fraction form
    11,428.55/15,770.30 = 6,392.64/x
  3. Step 3: Cross multiply
    11,428.55x = 15,770.30 × 6,392.64
  4. Step 4: Simplify right side
    11,428.55x = 100,813,818.63
  5. Step 5: Solve for x
    x = 100,813,818.63/11,428.55
  6. Step 6: Final answer
    x = 8,821.23

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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.