Home / 13,145.23-18,140.28-7,176.88

Finding the Fourth Proportional to 13,145.23, 18,140.28 and 7,176.88

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Solution

The fourth proportional to 13,145.23, 18,140.28 and 7,176.88 is: 9,904.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.23 : 18,140.28 = 7,176.88 : x
  2. Step 2: Convert to fraction form
    13,145.23/18,140.28 = 7,176.88/x
  3. Step 3: Cross multiply
    13,145.23x = 18,140.28 × 7,176.88
  4. Step 4: Simplify right side
    13,145.23x = 130,190,612.73
  5. Step 5: Solve for x
    x = 130,190,612.73/13,145.23
  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.