Home / 39,903.63-55,065.32-21,753.96

Finding the Fourth Proportional to 39,903.63, 55,065.32 and 21,753.96

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Solution

The fourth proportional to 39,903.63, 55,065.32 and 21,753.96 is: 30,019.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.63 : 55,065.32 = 21,753.96 : x
  2. Step 2: Convert to fraction form
    39,903.63/55,065.32 = 21,753.96/x
  3. Step 3: Cross multiply
    39,903.63x = 55,065.32 × 21,753.96
  4. Step 4: Simplify right side
    39,903.63x = 1,197,888,534.98
  5. Step 5: Solve for x
    x = 1,197,888,534.98/39,903.63
  6. Step 6: Final answer
    x = 30,019.54

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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.