Home / 20,743.90-31,111.80-6,892.90

Finding the Fourth Proportional to 20,743.90, 31,111.80 and 6,892.90

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Solution

The fourth proportional to 20,743.90, 31,111.80 and 6,892.90 is: 10,338.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.90 : 31,111.80 = 6,892.90 : x
  2. Step 2: Convert to fraction form
    20,743.90/31,111.80 = 6,892.90/x
  3. Step 3: Cross multiply
    20,743.90x = 31,111.80 × 6,892.90
  4. Step 4: Simplify right side
    20,743.90x = 214,450,526.22
  5. Step 5: Solve for x
    x = 214,450,526.22/20,743.90
  6. Step 6: Final answer
    x = 10,338.00

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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.