Home / 20,336.24-30,507.40-7,188.72

Finding the Fourth Proportional to 20,336.24, 30,507.40 and 7,188.72

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Solution

The fourth proportional to 20,336.24, 30,507.40 and 7,188.72 is: 10,784.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.24 : 30,507.40 = 7,188.72 : x
  2. Step 2: Convert to fraction form
    20,336.24/30,507.40 = 7,188.72/x
  3. Step 3: Cross multiply
    20,336.24x = 30,507.40 × 7,188.72
  4. Step 4: Simplify right side
    20,336.24x = 219,309,156.53
  5. Step 5: Solve for x
    x = 219,309,156.53/20,336.24
  6. Step 6: Final answer
    x = 10,784.15

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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.