Home / 31,090.13-42,904.38-16,942.98

Finding the Fourth Proportional to 31,090.13, 42,904.38 and 16,942.98

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Solution

The fourth proportional to 31,090.13, 42,904.38 and 16,942.98 is: 23,381.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,090.13 : 42,904.38 = 16,942.98 : x
  2. Step 2: Convert to fraction form
    31,090.13/42,904.38 = 16,942.98/x
  3. Step 3: Cross multiply
    31,090.13x = 42,904.38 × 16,942.98
  4. Step 4: Simplify right side
    31,090.13x = 726,928,052.25
  5. Step 5: Solve for x
    x = 726,928,052.25/31,090.13
  6. Step 6: Final answer
    x = 23,381.32

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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.