Home / 30,431.18-45,602.94-12,876.86

Finding the Fourth Proportional to 30,431.18, 45,602.94 and 12,876.86

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Solution

The fourth proportional to 30,431.18, 45,602.94 and 12,876.86 is: 19,296.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.18 : 45,602.94 = 12,876.86 : x
  2. Step 2: Convert to fraction form
    30,431.18/45,602.94 = 12,876.86/x
  3. Step 3: Cross multiply
    30,431.18x = 45,602.94 × 12,876.86
  4. Step 4: Simplify right side
    30,431.18x = 587,222,673.97
  5. Step 5: Solve for x
    x = 587,222,673.97/30,431.18
  6. Step 6: Final answer
    x = 19,296.74

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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.