Home / 20,409.72-30,614.80-6,178.32

Finding the Fourth Proportional to 20,409.72, 30,614.80 and 6,178.32

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Solution

The fourth proportional to 20,409.72, 30,614.80 and 6,178.32 is: 9,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.72 : 30,614.80 = 6,178.32 : x
  2. Step 2: Convert to fraction form
    20,409.72/30,614.80 = 6,178.32/x
  3. Step 3: Cross multiply
    20,409.72x = 30,614.80 × 6,178.32
  4. Step 4: Simplify right side
    20,409.72x = 189,148,031.14
  5. Step 5: Solve for x
    x = 189,148,031.14/20,409.72
  6. Step 6: Final answer
    x = 9,267.55

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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.