Home / 20,824.32-31,238.52-6,783.72

Finding the Fourth Proportional to 20,824.32, 31,238.52 and 6,783.72

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Solution

The fourth proportional to 20,824.32, 31,238.52 and 6,783.72 is: 10,176.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.32 : 31,238.52 = 6,783.72 : x
  2. Step 2: Convert to fraction form
    20,824.32/31,238.52 = 6,783.72/x
  3. Step 3: Cross multiply
    20,824.32x = 31,238.52 × 6,783.72
  4. Step 4: Simplify right side
    20,824.32x = 211,913,372.89
  5. Step 5: Solve for x
    x = 211,913,372.89/20,824.32
  6. Step 6: Final answer
    x = 10,176.24

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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.