Home / 21,068.73-31,594.32-8,580.29

Finding the Fourth Proportional to 21,068.73, 31,594.32 and 8,580.29

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Solution

The fourth proportional to 21,068.73, 31,594.32 and 8,580.29 is: 12,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.73 : 31,594.32 = 8,580.29 : x
  2. Step 2: Convert to fraction form
    21,068.73/31,594.32 = 8,580.29/x
  3. Step 3: Cross multiply
    21,068.73x = 31,594.32 × 8,580.29
  4. Step 4: Simplify right side
    21,068.73x = 271,088,269.98
  5. Step 5: Solve for x
    x = 271,088,269.98/21,068.73
  6. Step 6: Final answer
    x = 12,866.85

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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.