Home / 13,316.40-18,375.84-7,348.63

Finding the Fourth Proportional to 13,316.40, 18,375.84 and 7,348.63

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Solution

The fourth proportional to 13,316.40, 18,375.84 and 7,348.63 is: 10,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.40 : 18,375.84 = 7,348.63 : x
  2. Step 2: Convert to fraction form
    13,316.40/18,375.84 = 7,348.63/x
  3. Step 3: Cross multiply
    13,316.40x = 18,375.84 × 7,348.63
  4. Step 4: Simplify right side
    13,316.40x = 135,037,249.10
  5. Step 5: Solve for x
    x = 135,037,249.10/13,316.40
  6. Step 6: Final answer
    x = 10,140.67

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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.