Home / 13,519.85-18,657.50-7,551.99

Finding the Fourth Proportional to 13,519.85, 18,657.50 and 7,551.99

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Solution

The fourth proportional to 13,519.85, 18,657.50 and 7,551.99 is: 10,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.85 : 18,657.50 = 7,551.99 : x
  2. Step 2: Convert to fraction form
    13,519.85/18,657.50 = 7,551.99/x
  3. Step 3: Cross multiply
    13,519.85x = 18,657.50 × 7,551.99
  4. Step 4: Simplify right side
    13,519.85x = 140,901,215.67
  5. Step 5: Solve for x
    x = 140,901,215.67/13,519.85
  6. Step 6: Final answer
    x = 10,421.81

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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.