Home / 13,485.31-18,609.97-7,516.33

Finding the Fourth Proportional to 13,485.31, 18,609.97 and 7,516.33

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Solution

The fourth proportional to 13,485.31, 18,609.97 and 7,516.33 is: 10,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.31 : 18,609.97 = 7,516.33 : x
  2. Step 2: Convert to fraction form
    13,485.31/18,609.97 = 7,516.33/x
  3. Step 3: Cross multiply
    13,485.31x = 18,609.97 × 7,516.33
  4. Step 4: Simplify right side
    13,485.31x = 139,878,638.23
  5. Step 5: Solve for x
    x = 139,878,638.23/13,485.31
  6. Step 6: Final answer
    x = 10,372.67

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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.