Home / 28,514.89-42,742.26-11,858.15

Finding the Fourth Proportional to 28,514.89, 42,742.26 and 11,858.15

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Solution

The fourth proportional to 28,514.89, 42,742.26 and 11,858.15 is: 17,774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.89 : 42,742.26 = 11,858.15 : x
  2. Step 2: Convert to fraction form
    28,514.89/42,742.26 = 11,858.15/x
  3. Step 3: Cross multiply
    28,514.89x = 42,742.26 × 11,858.15
  4. Step 4: Simplify right side
    28,514.89x = 506,844,237.27
  5. Step 5: Solve for x
    x = 506,844,237.27/28,514.89
  6. Step 6: Final answer
    x = 17,774.72

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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.