Home / 13,565.44-18,719.76-7,900.36

Finding the Fourth Proportional to 13,565.44, 18,719.76 and 7,900.36

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Solution

The fourth proportional to 13,565.44, 18,719.76 and 7,900.36 is: 10,902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.44 : 18,719.76 = 7,900.36 : x
  2. Step 2: Convert to fraction form
    13,565.44/18,719.76 = 7,900.36/x
  3. Step 3: Cross multiply
    13,565.44x = 18,719.76 × 7,900.36
  4. Step 4: Simplify right side
    13,565.44x = 147,892,843.11
  5. Step 5: Solve for x
    x = 147,892,843.11/13,565.44
  6. Step 6: Final answer
    x = 10,902.18

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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.