Home / 13,287.15-18,335.97-7,318.67

Finding the Fourth Proportional to 13,287.15, 18,335.97 and 7,318.67

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Solution

The fourth proportional to 13,287.15, 18,335.97 and 7,318.67 is: 10,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.15 : 18,335.97 = 7,318.67 : x
  2. Step 2: Convert to fraction form
    13,287.15/18,335.97 = 7,318.67/x
  3. Step 3: Cross multiply
    13,287.15x = 18,335.97 × 7,318.67
  4. Step 4: Simplify right side
    13,287.15x = 134,194,821.88
  5. Step 5: Solve for x
    x = 134,194,821.88/13,287.15
  6. Step 6: Final answer
    x = 10,099.59

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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.