Home / 21,127.84-31,689.36-5,546.68

Finding the Fourth Proportional to 21,127.84, 31,689.36 and 5,546.68

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Solution

The fourth proportional to 21,127.84, 31,689.36 and 5,546.68 is: 8,319.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.84 : 31,689.36 = 5,546.68 : x
  2. Step 2: Convert to fraction form
    21,127.84/31,689.36 = 5,546.68/x
  3. Step 3: Cross multiply
    21,127.84x = 31,689.36 × 5,546.68
  4. Step 4: Simplify right side
    21,127.84x = 175,770,739.32
  5. Step 5: Solve for x
    x = 175,770,739.32/21,127.84
  6. Step 6: Final answer
    x = 8,319.39

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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.