Home / 13,188.97-18,200.31-7,525.55

Finding the Fourth Proportional to 13,188.97, 18,200.31 and 7,525.55

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Solution

The fourth proportional to 13,188.97, 18,200.31 and 7,525.55 is: 10,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.97 : 18,200.31 = 7,525.55 : x
  2. Step 2: Convert to fraction form
    13,188.97/18,200.31 = 7,525.55/x
  3. Step 3: Cross multiply
    13,188.97x = 18,200.31 × 7,525.55
  4. Step 4: Simplify right side
    13,188.97x = 136,967,342.92
  5. Step 5: Solve for x
    x = 136,967,342.92/13,188.97
  6. Step 6: Final answer
    x = 10,384.99

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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.