Home / 13,519.75-18,657.21-7,551.42

Finding the Fourth Proportional to 13,519.75, 18,657.21 and 7,551.42

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Solution

The fourth proportional to 13,519.75, 18,657.21 and 7,551.42 is: 10,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.75 : 18,657.21 = 7,551.42 : x
  2. Step 2: Convert to fraction form
    13,519.75/18,657.21 = 7,551.42/x
  3. Step 3: Cross multiply
    13,519.75x = 18,657.21 × 7,551.42
  4. Step 4: Simplify right side
    13,519.75x = 140,888,428.74
  5. Step 5: Solve for x
    x = 140,888,428.74/13,519.75
  6. Step 6: Final answer
    x = 10,420.94

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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.