Home / 13,543.75-18,690.42-7,575.04

Finding the Fourth Proportional to 13,543.75, 18,690.42 and 7,575.04

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Solution

The fourth proportional to 13,543.75, 18,690.42 and 7,575.04 is: 10,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.75 : 18,690.42 = 7,575.04 : x
  2. Step 2: Convert to fraction form
    13,543.75/18,690.42 = 7,575.04/x
  3. Step 3: Cross multiply
    13,543.75x = 18,690.42 × 7,575.04
  4. Step 4: Simplify right side
    13,543.75x = 141,580,604.45
  5. Step 5: Solve for x
    x = 141,580,604.45/13,543.75
  6. Step 6: Final answer
    x = 10,453.58

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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.