Home / 21,960.36-30,303.24-13,007.88

Finding the Fourth Proportional to 21,960.36, 30,303.24 and 13,007.88

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Solution

The fourth proportional to 21,960.36, 30,303.24 and 13,007.88 is: 17,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.36 : 30,303.24 = 13,007.88 : x
  2. Step 2: Convert to fraction form
    21,960.36/30,303.24 = 13,007.88/x
  3. Step 3: Cross multiply
    21,960.36x = 30,303.24 × 13,007.88
  4. Step 4: Simplify right side
    21,960.36x = 394,180,909.53
  5. Step 5: Solve for x
    x = 394,180,909.53/21,960.36
  6. Step 6: Final answer
    x = 17,949.66

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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.