Home / 13,228.45-18,256.82-7,923.15

Finding the Fourth Proportional to 13,228.45, 18,256.82 and 7,923.15

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Solution

The fourth proportional to 13,228.45, 18,256.82 and 7,923.15 is: 10,934.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.45 : 18,256.82 = 7,923.15 : x
  2. Step 2: Convert to fraction form
    13,228.45/18,256.82 = 7,923.15/x
  3. Step 3: Cross multiply
    13,228.45x = 18,256.82 × 7,923.15
  4. Step 4: Simplify right side
    13,228.45x = 144,651,483.77
  5. Step 5: Solve for x
    x = 144,651,483.77/13,228.45
  6. Step 6: Final answer
    x = 10,934.88

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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.