Home / 31,804.32-43,875.58-20,469.74

Finding the Fourth Proportional to 31,804.32, 43,875.58 and 20,469.74

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Solution

The fourth proportional to 31,804.32, 43,875.58 and 20,469.74 is: 28,238.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,804.32 : 43,875.58 = 20,469.74 : x
  2. Step 2: Convert to fraction form
    31,804.32/43,875.58 = 20,469.74/x
  3. Step 3: Cross multiply
    31,804.32x = 43,875.58 × 20,469.74
  4. Step 4: Simplify right side
    31,804.32x = 898,121,714.95
  5. Step 5: Solve for x
    x = 898,121,714.95/31,804.32
  6. Step 6: Final answer
    x = 28,238.98

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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.