Home / 18,821.17-28,326.08-14,165.29

Finding the Fourth Proportional to 18,821.17, 28,326.08 and 14,165.29

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Solution

The fourth proportional to 18,821.17, 28,326.08 and 14,165.29 is: 21,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.17 : 28,326.08 = 14,165.29 : x
  2. Step 2: Convert to fraction form
    18,821.17/28,326.08 = 14,165.29/x
  3. Step 3: Cross multiply
    18,821.17x = 28,326.08 × 14,165.29
  4. Step 4: Simplify right side
    18,821.17x = 401,247,137.76
  5. Step 5: Solve for x
    x = 401,247,137.76/18,821.17
  6. Step 6: Final answer
    x = 21,318.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.