Home / 20,525.00-28,331.90-12,976.43

Finding the Fourth Proportional to 20,525.00, 28,331.90 and 12,976.43

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Solution

The fourth proportional to 20,525.00, 28,331.90 and 12,976.43 is: 17,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.00 : 28,331.90 = 12,976.43 : x
  2. Step 2: Convert to fraction form
    20,525.00/28,331.90 = 12,976.43/x
  3. Step 3: Cross multiply
    20,525.00x = 28,331.90 × 12,976.43
  4. Step 4: Simplify right side
    20,525.00x = 367,646,875.42
  5. Step 5: Solve for x
    x = 367,646,875.42/20,525.00
  6. Step 6: Final answer
    x = 17,912.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.