Home / 31,368.92-43,266.30-20,767.64

Finding the Fourth Proportional to 31,368.92, 43,266.30 and 20,767.64

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Solution

The fourth proportional to 31,368.92, 43,266.30 and 20,767.64 is: 28,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.92 : 43,266.30 = 20,767.64 : x
  2. Step 2: Convert to fraction form
    31,368.92/43,266.30 = 20,767.64/x
  3. Step 3: Cross multiply
    31,368.92x = 43,266.30 × 20,767.64
  4. Step 4: Simplify right side
    31,368.92x = 898,538,942.53
  5. Step 5: Solve for x
    x = 898,538,942.53/31,368.92
  6. Step 6: Final answer
    x = 28,644.24

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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.