Home / 28,289.18-42,435.83-8,569.28

Finding the Fourth Proportional to 28,289.18, 42,435.83 and 8,569.28

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Solution

The fourth proportional to 28,289.18, 42,435.83 and 8,569.28 is: 12,854.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.18 : 42,435.83 = 8,569.28 : x
  2. Step 2: Convert to fraction form
    28,289.18/42,435.83 = 8,569.28/x
  3. Step 3: Cross multiply
    28,289.18x = 42,435.83 × 8,569.28
  4. Step 4: Simplify right side
    28,289.18x = 363,644,509.30
  5. Step 5: Solve for x
    x = 363,644,509.30/28,289.18
  6. Step 6: Final answer
    x = 12,854.54

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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.