Home / 13,113.35-18,096.65-7,145

Finding the Fourth Proportional to 13,113.35, 18,096.65 and 7,145

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Solution

The fourth proportional to 13,113.35, 18,096.65 and 7,145 is: 9,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.35 : 18,096.65 = 7,145 : x
  2. Step 2: Convert to fraction form
    13,113.35/18,096.65 = 7,145/x
  3. Step 3: Cross multiply
    13,113.35x = 18,096.65 × 7,145
  4. Step 4: Simplify right side
    13,113.35x = 129,300,564.25
  5. Step 5: Solve for x
    x = 129,300,564.25/13,113.35
  6. Step 6: Final answer
    x = 9,860.22

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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.