Home / 12,431.64-18,648.37-3,666.93

Finding the Fourth Proportional to 12,431.64, 18,648.37 and 3,666.93

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Solution

The fourth proportional to 12,431.64, 18,648.37 and 3,666.93 is: 5,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.64 : 18,648.37 = 3,666.93 : x
  2. Step 2: Convert to fraction form
    12,431.64/18,648.37 = 3,666.93/x
  3. Step 3: Cross multiply
    12,431.64x = 18,648.37 × 3,666.93
  4. Step 4: Simplify right side
    12,431.64x = 68,382,267.40
  5. Step 5: Solve for x
    x = 68,382,267.40/12,431.64
  6. Step 6: Final answer
    x = 5,500.66

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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.