Home / 12,431.51-18,646.80-4,111.32

Finding the Fourth Proportional to 12,431.51, 18,646.80 and 4,111.32

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Solution

The fourth proportional to 12,431.51, 18,646.80 and 4,111.32 is: 6,166.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.51 : 18,646.80 = 4,111.32 : x
  2. Step 2: Convert to fraction form
    12,431.51/18,646.80 = 4,111.32/x
  3. Step 3: Cross multiply
    12,431.51x = 18,646.80 × 4,111.32
  4. Step 4: Simplify right side
    12,431.51x = 76,662,961.78
  5. Step 5: Solve for x
    x = 76,662,961.78/12,431.51
  6. Step 6: Final answer
    x = 6,166.83

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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.