Home / 21,072.08-29,083.55-13,527.95

Finding the Fourth Proportional to 21,072.08, 29,083.55 and 13,527.95

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Solution

The fourth proportional to 21,072.08, 29,083.55 and 13,527.95 is: 18,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.08 : 29,083.55 = 13,527.95 : x
  2. Step 2: Convert to fraction form
    21,072.08/29,083.55 = 13,527.95/x
  3. Step 3: Cross multiply
    21,072.08x = 29,083.55 × 13,527.95
  4. Step 4: Simplify right side
    21,072.08x = 393,440,597.17
  5. Step 5: Solve for x
    x = 393,440,597.17/21,072.08
  6. Step 6: Final answer
    x = 18,671.18

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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.