Home / 21,212.08-31,811.64-10,112.92

Finding the Fourth Proportional to 21,212.08, 31,811.64 and 10,112.92

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Solution

The fourth proportional to 21,212.08, 31,811.64 and 10,112.92 is: 15,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.08 : 31,811.64 = 10,112.92 : x
  2. Step 2: Convert to fraction form
    21,212.08/31,811.64 = 10,112.92/x
  3. Step 3: Cross multiply
    21,212.08x = 31,811.64 × 10,112.92
  4. Step 4: Simplify right side
    21,212.08x = 321,708,570.39
  5. Step 5: Solve for x
    x = 321,708,570.39/21,212.08
  6. Step 6: Final answer
    x = 15,166.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.