Home / 21,090.14-31,569.33-14,075.90

Finding the Fourth Proportional to 21,090.14, 31,569.33 and 14,075.90

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Solution

The fourth proportional to 21,090.14, 31,569.33 and 14,075.90 is: 21,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.14 : 31,569.33 = 14,075.90 : x
  2. Step 2: Convert to fraction form
    21,090.14/31,569.33 = 14,075.90/x
  3. Step 3: Cross multiply
    21,090.14x = 31,569.33 × 14,075.90
  4. Step 4: Simplify right side
    21,090.14x = 444,366,732.15
  5. Step 5: Solve for x
    x = 444,366,732.15/21,090.14
  6. Step 6: Final answer
    x = 21,069.88

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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.