Home / 12,320.30-18,475.65-3,998.32

Finding the Fourth Proportional to 12,320.30, 18,475.65 and 3,998.32

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Solution

The fourth proportional to 12,320.30, 18,475.65 and 3,998.32 is: 5,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.30 : 18,475.65 = 3,998.32 : x
  2. Step 2: Convert to fraction form
    12,320.30/18,475.65 = 3,998.32/x
  3. Step 3: Cross multiply
    12,320.30x = 18,475.65 × 3,998.32
  4. Step 4: Simplify right side
    12,320.30x = 73,871,514.72
  5. Step 5: Solve for x
    x = 73,871,514.72/12,320.30
  6. Step 6: Final answer
    x = 5,995.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.