Home / 13,519.75-18,657.04-7,551.51

Finding the Fourth Proportional to 13,519.75, 18,657.04 and 7,551.51

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Solution

The fourth proportional to 13,519.75, 18,657.04 and 7,551.51 is: 10,420.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.75 : 18,657.04 = 7,551.51 : x
  2. Step 2: Convert to fraction form
    13,519.75/18,657.04 = 7,551.51/x
  3. Step 3: Cross multiply
    13,519.75x = 18,657.04 × 7,551.51
  4. Step 4: Simplify right side
    13,519.75x = 140,888,824.13
  5. Step 5: Solve for x
    x = 140,888,824.13/13,519.75
  6. Step 6: Final answer
    x = 10,420.96

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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.