Home / 13,511.75-18,645.85-7,543.25

Finding the Fourth Proportional to 13,511.75, 18,645.85 and 7,543.25

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Solution

The fourth proportional to 13,511.75, 18,645.85 and 7,543.25 is: 10,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.75 : 18,645.85 = 7,543.25 : x
  2. Step 2: Convert to fraction form
    13,511.75/18,645.85 = 7,543.25/x
  3. Step 3: Cross multiply
    13,511.75x = 18,645.85 × 7,543.25
  4. Step 4: Simplify right side
    13,511.75x = 140,650,308.01
  5. Step 5: Solve for x
    x = 140,650,308.01/13,511.75
  6. Step 6: Final answer
    x = 10,409.48

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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.