Home / 31,468.32-43,444.26-20,872.35

Finding the Fourth Proportional to 31,468.32, 43,444.26 and 20,872.35

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Solution

The fourth proportional to 31,468.32, 43,444.26 and 20,872.35 is: 28,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,468.32 : 43,444.26 = 20,872.35 : x
  2. Step 2: Convert to fraction form
    31,468.32/43,444.26 = 20,872.35/x
  3. Step 3: Cross multiply
    31,468.32x = 43,444.26 × 20,872.35
  4. Step 4: Simplify right side
    31,468.32x = 906,783,800.21
  5. Step 5: Solve for x
    x = 906,783,800.21/31,468.32
  6. Step 6: Final answer
    x = 28,815.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.