Home / 13,821.05-19,076.13-8,784.29

Finding the Fourth Proportional to 13,821.05, 19,076.13 and 8,784.29

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Solution

The fourth proportional to 13,821.05, 19,076.13 and 8,784.29 is: 12,124.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.05 : 19,076.13 = 8,784.29 : x
  2. Step 2: Convert to fraction form
    13,821.05/19,076.13 = 8,784.29/x
  3. Step 3: Cross multiply
    13,821.05x = 19,076.13 × 8,784.29
  4. Step 4: Simplify right side
    13,821.05x = 167,570,162.62
  5. Step 5: Solve for x
    x = 167,570,162.62/13,821.05
  6. Step 6: Final answer
    x = 12,124.28

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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.