Home / 13,481.32-18,603.64-7,513.55

Finding the Fourth Proportional to 13,481.32, 18,603.64 and 7,513.55

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Solution

The fourth proportional to 13,481.32, 18,603.64 and 7,513.55 is: 10,368.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.32 : 18,603.64 = 7,513.55 : x
  2. Step 2: Convert to fraction form
    13,481.32/18,603.64 = 7,513.55/x
  3. Step 3: Cross multiply
    13,481.32x = 18,603.64 × 7,513.55
  4. Step 4: Simplify right side
    13,481.32x = 139,779,379.32
  5. Step 5: Solve for x
    x = 139,779,379.32/13,481.32
  6. Step 6: Final answer
    x = 10,368.37

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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.