Home / 21,068.25-31,605.44-8,589.04

Finding the Fourth Proportional to 21,068.25, 31,605.44 and 8,589.04

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Solution

The fourth proportional to 21,068.25, 31,605.44 and 8,589.04 is: 12,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.25 : 31,605.44 = 8,589.04 : x
  2. Step 2: Convert to fraction form
    21,068.25/31,605.44 = 8,589.04/x
  3. Step 3: Cross multiply
    21,068.25x = 31,605.44 × 8,589.04
  4. Step 4: Simplify right side
    21,068.25x = 271,460,314.73
  5. Step 5: Solve for x
    x = 271,460,314.73/21,068.25
  6. Step 6: Final answer
    x = 12,884.80

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1.5x scale

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.