Home / 21,239.39-29,311.81-14,056.92

Finding the Fourth Proportional to 21,239.39, 29,311.81 and 14,056.92

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Solution

The fourth proportional to 21,239.39, 29,311.81 and 14,056.92 is: 19,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.39 : 29,311.81 = 14,056.92 : x
  2. Step 2: Convert to fraction form
    21,239.39/29,311.81 = 14,056.92/x
  3. Step 3: Cross multiply
    21,239.39x = 29,311.81 × 14,056.92
  4. Step 4: Simplify right side
    21,239.39x = 412,033,733.08
  5. Step 5: Solve for x
    x = 412,033,733.08/21,239.39
  6. Step 6: Final answer
    x = 19,399.51

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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.