Home / 11,783.76-16,261.59-6,478.66

Finding the Fourth Proportional to 11,783.76, 16,261.59 and 6,478.66

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Solution

The fourth proportional to 11,783.76, 16,261.59 and 6,478.66 is: 8,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.76 : 16,261.59 = 6,478.66 : x
  2. Step 2: Convert to fraction form
    11,783.76/16,261.59 = 6,478.66/x
  3. Step 3: Cross multiply
    11,783.76x = 16,261.59 × 6,478.66
  4. Step 4: Simplify right side
    11,783.76x = 105,353,312.67
  5. Step 5: Solve for x
    x = 105,353,312.67/11,783.76
  6. Step 6: Final answer
    x = 8,940.55

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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.