Home / 21,281.46-31,898.97-8,809.62

Finding the Fourth Proportional to 21,281.46, 31,898.97 and 8,809.62

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Solution

The fourth proportional to 21,281.46, 31,898.97 and 8,809.62 is: 13,204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.46 : 31,898.97 = 8,809.62 : x
  2. Step 2: Convert to fraction form
    21,281.46/31,898.97 = 8,809.62/x
  3. Step 3: Cross multiply
    21,281.46x = 31,898.97 × 8,809.62
  4. Step 4: Simplify right side
    21,281.46x = 281,017,804.09
  5. Step 5: Solve for x
    x = 281,017,804.09/21,281.46
  6. Step 6: Final answer
    x = 13,204.82

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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.