Home / 13,288.29-18,338.04-7,623.96

Finding the Fourth Proportional to 13,288.29, 18,338.04 and 7,623.96

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Solution

The fourth proportional to 13,288.29, 18,338.04 and 7,623.96 is: 10,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.29 : 18,338.04 = 7,623.96 : x
  2. Step 2: Convert to fraction form
    13,288.29/18,338.04 = 7,623.96/x
  3. Step 3: Cross multiply
    13,288.29x = 18,338.04 × 7,623.96
  4. Step 4: Simplify right side
    13,288.29x = 139,808,483.44
  5. Step 5: Solve for x
    x = 139,808,483.44/13,288.29
  6. Step 6: Final answer
    x = 10,521.18

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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.