Home / 20,277.60-30,419.28-6,238.79

Finding the Fourth Proportional to 20,277.60, 30,419.28 and 6,238.79

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Solution

The fourth proportional to 20,277.60, 30,419.28 and 6,238.79 is: 9,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.60 : 30,419.28 = 6,238.79 : x
  2. Step 2: Convert to fraction form
    20,277.60/30,419.28 = 6,238.79/x
  3. Step 3: Cross multiply
    20,277.60x = 30,419.28 × 6,238.79
  4. Step 4: Simplify right side
    20,277.60x = 189,779,499.87
  5. Step 5: Solve for x
    x = 189,779,499.87/20,277.60
  6. Step 6: Final answer
    x = 9,359.07

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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.