Home / 13,176.81-18,182.70-7,512.48

Finding the Fourth Proportional to 13,176.81, 18,182.70 and 7,512.48

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Solution

The fourth proportional to 13,176.81, 18,182.70 and 7,512.48 is: 10,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.81 : 18,182.70 = 7,512.48 : x
  2. Step 2: Convert to fraction form
    13,176.81/18,182.70 = 7,512.48/x
  3. Step 3: Cross multiply
    13,176.81x = 18,182.70 × 7,512.48
  4. Step 4: Simplify right side
    13,176.81x = 136,597,170.10
  5. Step 5: Solve for x
    x = 136,597,170.10/13,176.81
  6. Step 6: Final answer
    x = 10,366.48

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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.