Home / 11,075.84-15,281.64-7,714.88

Finding the Fourth Proportional to 11,075.84, 15,281.64 and 7,714.88

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Solution

The fourth proportional to 11,075.84, 15,281.64 and 7,714.88 is: 10,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,075.84 : 15,281.64 = 7,714.88 : x
  2. Step 2: Convert to fraction form
    11,075.84/15,281.64 = 7,714.88/x
  3. Step 3: Cross multiply
    11,075.84x = 15,281.64 × 7,714.88
  4. Step 4: Simplify right side
    11,075.84x = 117,896,018.80
  5. Step 5: Solve for x
    x = 117,896,018.80/11,075.84
  6. Step 6: Final answer
    x = 10,644.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.