Home / 20,918.06-31,374.78-6,127.12

Finding the Fourth Proportional to 20,918.06, 31,374.78 and 6,127.12

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Solution

The fourth proportional to 20,918.06, 31,374.78 and 6,127.12 is: 9,190.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.06 : 31,374.78 = 6,127.12 : x
  2. Step 2: Convert to fraction form
    20,918.06/31,374.78 = 6,127.12/x
  3. Step 3: Cross multiply
    20,918.06x = 31,374.78 × 6,127.12
  4. Step 4: Simplify right side
    20,918.06x = 192,237,042.03
  5. Step 5: Solve for x
    x = 192,237,042.03/20,918.06
  6. Step 6: Final answer
    x = 9,190.00

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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.