Home / 11,427.84-15,770.31-6,392.00

Finding the Fourth Proportional to 11,427.84, 15,770.31 and 6,392.00

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Solution

The fourth proportional to 11,427.84, 15,770.31 and 6,392.00 is: 8,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.84 : 15,770.31 = 6,392.00 : x
  2. Step 2: Convert to fraction form
    11,427.84/15,770.31 = 6,392.00/x
  3. Step 3: Cross multiply
    11,427.84x = 15,770.31 × 6,392.00
  4. Step 4: Simplify right side
    11,427.84x = 100,803,836.98
  5. Step 5: Solve for x
    x = 100,803,836.98/11,427.84
  6. Step 6: Final answer
    x = 8,820.90

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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.