Home / 21,075.12-31,614.30-6,282.88

Finding the Fourth Proportional to 21,075.12, 31,614.30 and 6,282.88

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Solution

The fourth proportional to 21,075.12, 31,614.30 and 6,282.88 is: 9,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.12 : 31,614.30 = 6,282.88 : x
  2. Step 2: Convert to fraction form
    21,075.12/31,614.30 = 6,282.88/x
  3. Step 3: Cross multiply
    21,075.12x = 31,614.30 × 6,282.88
  4. Step 4: Simplify right side
    21,075.12x = 198,628,853.18
  5. Step 5: Solve for x
    x = 198,628,853.18/21,075.12
  6. Step 6: Final answer
    x = 9,424.80

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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.