Home / 13,821.74-19,077.07-8,784.98

Finding the Fourth Proportional to 13,821.74, 19,077.07 and 8,784.98

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Solution

The fourth proportional to 13,821.74, 19,077.07 and 8,784.98 is: 12,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.74 : 19,077.07 = 8,784.98 : x
  2. Step 2: Convert to fraction form
    13,821.74/19,077.07 = 8,784.98/x
  3. Step 3: Cross multiply
    13,821.74x = 19,077.07 × 8,784.98
  4. Step 4: Simplify right side
    13,821.74x = 167,591,678.41
  5. Step 5: Solve for x
    x = 167,591,678.41/13,821.74
  6. Step 6: Final answer
    x = 12,125.22

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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.