Home / 21,152.46-29,189.39-12,659.25

Finding the Fourth Proportional to 21,152.46, 29,189.39 and 12,659.25

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Solution

The fourth proportional to 21,152.46, 29,189.39 and 12,659.25 is: 17,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.46 : 29,189.39 = 12,659.25 : x
  2. Step 2: Convert to fraction form
    21,152.46/29,189.39 = 12,659.25/x
  3. Step 3: Cross multiply
    21,152.46x = 29,189.39 × 12,659.25
  4. Step 4: Simplify right side
    21,152.46x = 369,515,785.36
  5. Step 5: Solve for x
    x = 369,515,785.36/21,152.46
  6. Step 6: Final answer
    x = 17,469.16

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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.