Home / 21,212.28-31,818.42-5,629.50

Finding the Fourth Proportional to 21,212.28, 31,818.42 and 5,629.50

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Solution

The fourth proportional to 21,212.28, 31,818.42 and 5,629.50 is: 8,444.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.28 : 31,818.42 = 5,629.50 : x
  2. Step 2: Convert to fraction form
    21,212.28/31,818.42 = 5,629.50/x
  3. Step 3: Cross multiply
    21,212.28x = 31,818.42 × 5,629.50
  4. Step 4: Simplify right side
    21,212.28x = 179,121,795.39
  5. Step 5: Solve for x
    x = 179,121,795.39/21,212.28
  6. Step 6: Final answer
    x = 8,444.25

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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.