Home / 28,779.51-43,175.15-12,139.52

Finding the Fourth Proportional to 28,779.51, 43,175.15 and 12,139.52

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Solution

The fourth proportional to 28,779.51, 43,175.15 and 12,139.52 is: 18,211.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.51 : 43,175.15 = 12,139.52 : x
  2. Step 2: Convert to fraction form
    28,779.51/43,175.15 = 12,139.52/x
  3. Step 3: Cross multiply
    28,779.51x = 43,175.15 × 12,139.52
  4. Step 4: Simplify right side
    28,779.51x = 524,125,320.35
  5. Step 5: Solve for x
    x = 524,125,320.35/28,779.51
  6. Step 6: Final answer
    x = 18,211.75

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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.