Home / 13,145.21-18,140.13-7,176.93

Finding the Fourth Proportional to 13,145.21, 18,140.13 and 7,176.93

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Solution

The fourth proportional to 13,145.21, 18,140.13 and 7,176.93 is: 9,904.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.21 : 18,140.13 = 7,176.93 : x
  2. Step 2: Convert to fraction form
    13,145.21/18,140.13 = 7,176.93/x
  3. Step 3: Cross multiply
    13,145.21x = 18,140.13 × 7,176.93
  4. Step 4: Simplify right side
    13,145.21x = 130,190,406.01
  5. Step 5: Solve for x
    x = 130,190,406.01/13,145.21
  6. Step 6: Final answer
    x = 9,904.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.