Home / 30,731.36-42,410.13-18,794.48

Finding the Fourth Proportional to 30,731.36, 42,410.13 and 18,794.48

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Solution

The fourth proportional to 30,731.36, 42,410.13 and 18,794.48 is: 25,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,731.36 : 42,410.13 = 18,794.48 : x
  2. Step 2: Convert to fraction form
    30,731.36/42,410.13 = 18,794.48/x
  3. Step 3: Cross multiply
    30,731.36x = 42,410.13 × 18,794.48
  4. Step 4: Simplify right side
    30,731.36x = 797,076,340.08
  5. Step 5: Solve for x
    x = 797,076,340.08/30,731.36
  6. Step 6: Final answer
    x = 25,936.90

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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.