Home / 13,823.54-19,079.58-8,786.78

Finding the Fourth Proportional to 13,823.54, 19,079.58 and 8,786.78

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Solution

The fourth proportional to 13,823.54, 19,079.58 and 8,786.78 is: 12,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.54 : 19,079.58 = 8,786.78 : x
  2. Step 2: Convert to fraction form
    13,823.54/19,079.58 = 8,786.78/x
  3. Step 3: Cross multiply
    13,823.54x = 19,079.58 × 8,786.78
  4. Step 4: Simplify right side
    13,823.54x = 167,648,071.95
  5. Step 5: Solve for x
    x = 167,648,071.95/13,823.54
  6. Step 6: Final answer
    x = 12,127.72

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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.