Home / 13,317.21-18,378.86-7,350.18

Finding the Fourth Proportional to 13,317.21, 18,378.86 and 7,350.18

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Solution

The fourth proportional to 13,317.21, 18,378.86 and 7,350.18 is: 10,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.21 : 18,378.86 = 7,350.18 : x
  2. Step 2: Convert to fraction form
    13,317.21/18,378.86 = 7,350.18/x
  3. Step 3: Cross multiply
    13,317.21x = 18,378.86 × 7,350.18
  4. Step 4: Simplify right side
    13,317.21x = 135,087,929.19
  5. Step 5: Solve for x
    x = 135,087,929.19/13,317.21
  6. Step 6: Final answer
    x = 10,143.86

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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.