Home / 13,152.18-18,149.28-7,182.66

Finding the Fourth Proportional to 13,152.18, 18,149.28 and 7,182.66

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Solution

The fourth proportional to 13,152.18, 18,149.28 and 7,182.66 is: 9,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.18 : 18,149.28 = 7,182.66 : x
  2. Step 2: Convert to fraction form
    13,152.18/18,149.28 = 7,182.66/x
  3. Step 3: Cross multiply
    13,152.18x = 18,149.28 × 7,182.66
  4. Step 4: Simplify right side
    13,152.18x = 130,360,107.48
  5. Step 5: Solve for x
    x = 130,360,107.48/13,152.18
  6. Step 6: Final answer
    x = 9,911.67

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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.