Home / 31,003.64-42,785.46-16,856.80

Finding the Fourth Proportional to 31,003.64, 42,785.46 and 16,856.80

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Solution

The fourth proportional to 31,003.64, 42,785.46 and 16,856.80 is: 23,262.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,003.64 : 42,785.46 = 16,856.80 : x
  2. Step 2: Convert to fraction form
    31,003.64/42,785.46 = 16,856.80/x
  3. Step 3: Cross multiply
    31,003.64x = 42,785.46 × 16,856.80
  4. Step 4: Simplify right side
    31,003.64x = 721,225,942.13
  5. Step 5: Solve for x
    x = 721,225,942.13/31,003.64
  6. Step 6: Final answer
    x = 23,262.62

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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.