Home / 20,710.99-31,066.35-12,393.33

Finding the Fourth Proportional to 20,710.99, 31,066.35 and 12,393.33

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Solution

The fourth proportional to 20,710.99, 31,066.35 and 12,393.33 is: 18,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.99 : 31,066.35 = 12,393.33 : x
  2. Step 2: Convert to fraction form
    20,710.99/31,066.35 = 12,393.33/x
  3. Step 3: Cross multiply
    20,710.99x = 31,066.35 × 12,393.33
  4. Step 4: Simplify right side
    20,710.99x = 385,015,527.45
  5. Step 5: Solve for x
    x = 385,015,527.45/20,710.99
  6. Step 6: Final answer
    x = 18,589.91

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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.