Home / 30,876.41-42,610.03-18,935.39

Finding the Fourth Proportional to 30,876.41, 42,610.03 and 18,935.39

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Solution

The fourth proportional to 30,876.41, 42,610.03 and 18,935.39 is: 26,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.41 : 42,610.03 = 18,935.39 : x
  2. Step 2: Convert to fraction form
    30,876.41/42,610.03 = 18,935.39/x
  3. Step 3: Cross multiply
    30,876.41x = 42,610.03 × 18,935.39
  4. Step 4: Simplify right side
    30,876.41x = 806,837,595.15
  5. Step 5: Solve for x
    x = 806,837,595.15/30,876.41
  6. Step 6: Final answer
    x = 26,131.20

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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.