Home / 20,388.12-30,586.58-6,347.86

Finding the Fourth Proportional to 20,388.12, 30,586.58 and 6,347.86

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Solution

The fourth proportional to 20,388.12, 30,586.58 and 6,347.86 is: 9,523.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.12 : 30,586.58 = 6,347.86 : x
  2. Step 2: Convert to fraction form
    20,388.12/30,586.58 = 6,347.86/x
  3. Step 3: Cross multiply
    20,388.12x = 30,586.58 × 6,347.86
  4. Step 4: Simplify right side
    20,388.12x = 194,159,327.72
  5. Step 5: Solve for x
    x = 194,159,327.72/20,388.12
  6. Step 6: Final answer
    x = 9,523.16

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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.