Home / 13,113.47-18,096.80-7,145.14

Finding the Fourth Proportional to 13,113.47, 18,096.80 and 7,145.14

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Solution

The fourth proportional to 13,113.47, 18,096.80 and 7,145.14 is: 9,860.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.47 : 18,096.80 = 7,145.14 : x
  2. Step 2: Convert to fraction form
    13,113.47/18,096.80 = 7,145.14/x
  3. Step 3: Cross multiply
    13,113.47x = 18,096.80 × 7,145.14
  4. Step 4: Simplify right side
    13,113.47x = 129,304,169.55
  5. Step 5: Solve for x
    x = 129,304,169.55/13,113.47
  6. Step 6: Final answer
    x = 9,860.41

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1.5x scale

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.