Home / 21,003.47-31,504.39-5,208.54

Finding the Fourth Proportional to 21,003.47, 31,504.39 and 5,208.54

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Solution

The fourth proportional to 21,003.47, 31,504.39 and 5,208.54 is: 7,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.47 : 31,504.39 = 5,208.54 : x
  2. Step 2: Convert to fraction form
    21,003.47/31,504.39 = 5,208.54/x
  3. Step 3: Cross multiply
    21,003.47x = 31,504.39 × 5,208.54
  4. Step 4: Simplify right side
    21,003.47x = 164,091,773.63
  5. Step 5: Solve for x
    x = 164,091,773.63/21,003.47
  6. Step 6: Final answer
    x = 7,812.60

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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.