Home / 18,961.29-28,316.18-18,755.35

Finding the Fourth Proportional to 18,961.29, 28,316.18 and 18,755.35

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Solution

The fourth proportional to 18,961.29, 28,316.18 and 18,755.35 is: 28,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.29 : 28,316.18 = 18,755.35 : x
  2. Step 2: Convert to fraction form
    18,961.29/28,316.18 = 18,755.35/x
  3. Step 3: Cross multiply
    18,961.29x = 28,316.18 × 18,755.35
  4. Step 4: Simplify right side
    18,961.29x = 531,079,842.66
  5. Step 5: Solve for x
    x = 531,079,842.66/18,961.29
  6. Step 6: Final answer
    x = 28,008.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.