Home / 20,987.00-31,480.50-6,943.26

Finding the Fourth Proportional to 20,987.00, 31,480.50 and 6,943.26

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Solution

The fourth proportional to 20,987.00, 31,480.50 and 6,943.26 is: 10,414.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.00 : 31,480.50 = 6,943.26 : x
  2. Step 2: Convert to fraction form
    20,987.00/31,480.50 = 6,943.26/x
  3. Step 3: Cross multiply
    20,987.00x = 31,480.50 × 6,943.26
  4. Step 4: Simplify right side
    20,987.00x = 218,577,130.31
  5. Step 5: Solve for x
    x = 218,577,130.31/20,987.00
  6. Step 6: Final answer
    x = 10,414.88

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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.