Home / 21,282.46-31,900.47-8,810.62

Finding the Fourth Proportional to 21,282.46, 31,900.47 and 8,810.62

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Solution

The fourth proportional to 21,282.46, 31,900.47 and 8,810.62 is: 13,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.46 : 31,900.47 = 8,810.62 : x
  2. Step 2: Convert to fraction form
    21,282.46/31,900.47 = 8,810.62/x
  3. Step 3: Cross multiply
    21,282.46x = 31,900.47 × 8,810.62
  4. Step 4: Simplify right side
    21,282.46x = 281,062,918.99
  5. Step 5: Solve for x
    x = 281,062,918.99/21,282.46
  6. Step 6: Final answer
    x = 13,206.32

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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.