Home / 28,514.78-42,779.46-11,869.28

Finding the Fourth Proportional to 28,514.78, 42,779.46 and 11,869.28

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Solution

The fourth proportional to 28,514.78, 42,779.46 and 11,869.28 is: 17,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.78 : 42,779.46 = 11,869.28 : x
  2. Step 2: Convert to fraction form
    28,514.78/42,779.46 = 11,869.28/x
  3. Step 3: Cross multiply
    28,514.78x = 42,779.46 × 11,869.28
  4. Step 4: Simplify right side
    28,514.78x = 507,761,388.99
  5. Step 5: Solve for x
    x = 507,761,388.99/28,514.78
  6. Step 6: Final answer
    x = 17,806.95

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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.