Home / 13,638.49-18,822.10-7,590.07

Finding the Fourth Proportional to 13,638.49, 18,822.10 and 7,590.07

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Solution

The fourth proportional to 13,638.49, 18,822.10 and 7,590.07 is: 10,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.49 : 18,822.10 = 7,590.07 : x
  2. Step 2: Convert to fraction form
    13,638.49/18,822.10 = 7,590.07/x
  3. Step 3: Cross multiply
    13,638.49x = 18,822.10 × 7,590.07
  4. Step 4: Simplify right side
    13,638.49x = 142,860,974.58
  5. Step 5: Solve for x
    x = 142,860,974.58/13,638.49
  6. Step 6: Final answer
    x = 10,474.84

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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.