Home / 28,540.08-42,779.39-11,895.66

Finding the Fourth Proportional to 28,540.08, 42,779.39 and 11,895.66

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Solution

The fourth proportional to 28,540.08, 42,779.39 and 11,895.66 is: 17,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.08 : 42,779.39 = 11,895.66 : x
  2. Step 2: Convert to fraction form
    28,540.08/42,779.39 = 11,895.66/x
  3. Step 3: Cross multiply
    28,540.08x = 42,779.39 × 11,895.66
  4. Step 4: Simplify right side
    28,540.08x = 508,889,018.97
  5. Step 5: Solve for x
    x = 508,889,018.97/28,540.08
  6. Step 6: Final answer
    x = 17,830.68

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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.