Home / 13,131.24-18,119.88-7,752.84

Finding the Fourth Proportional to 13,131.24, 18,119.88 and 7,752.84

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Solution

The fourth proportional to 13,131.24, 18,119.88 and 7,752.84 is: 10,698.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.24 : 18,119.88 = 7,752.84 : x
  2. Step 2: Convert to fraction form
    13,131.24/18,119.88 = 7,752.84/x
  3. Step 3: Cross multiply
    13,131.24x = 18,119.88 × 7,752.84
  4. Step 4: Simplify right side
    13,131.24x = 140,480,530.46
  5. Step 5: Solve for x
    x = 140,480,530.46/13,131.24
  6. Step 6: Final answer
    x = 10,698.19

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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.