Home / 20,381.32-30,571.25-5,590.00

Finding the Fourth Proportional to 20,381.32, 30,571.25 and 5,590.00

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Solution

The fourth proportional to 20,381.32, 30,571.25 and 5,590.00 is: 8,384.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.32 : 30,571.25 = 5,590.00 : x
  2. Step 2: Convert to fraction form
    20,381.32/30,571.25 = 5,590.00/x
  3. Step 3: Cross multiply
    20,381.32x = 30,571.25 × 5,590.00
  4. Step 4: Simplify right side
    20,381.32x = 170,893,134.64
  5. Step 5: Solve for x
    x = 170,893,134.64/20,381.32
  6. Step 6: Final answer
    x = 8,384.79

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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.