Home / 20,963.04-31,443.90-7,815.54

Finding the Fourth Proportional to 20,963.04, 31,443.90 and 7,815.54

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Solution

The fourth proportional to 20,963.04, 31,443.90 and 7,815.54 is: 11,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.04 : 31,443.90 = 7,815.54 : x
  2. Step 2: Convert to fraction form
    20,963.04/31,443.90 = 7,815.54/x
  3. Step 3: Cross multiply
    20,963.04x = 31,443.90 × 7,815.54
  4. Step 4: Simplify right side
    20,963.04x = 245,751,058.21
  5. Step 5: Solve for x
    x = 245,751,058.21/20,963.04
  6. Step 6: Final answer
    x = 11,723.06

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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.