Home / 28,590.45-42,887.31-8,871.81

Finding the Fourth Proportional to 28,590.45, 42,887.31 and 8,871.81

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Solution

The fourth proportional to 28,590.45, 42,887.31 and 8,871.81 is: 13,308.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.45 : 42,887.31 = 8,871.81 : x
  2. Step 2: Convert to fraction form
    28,590.45/42,887.31 = 8,871.81/x
  3. Step 3: Cross multiply
    28,590.45x = 42,887.31 × 8,871.81
  4. Step 4: Simplify right side
    28,590.45x = 380,488,065.73
  5. Step 5: Solve for x
    x = 380,488,065.73/28,590.45
  6. Step 6: Final answer
    x = 13,308.22

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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.