Home / 28,687.70-43,031.59-8,966.36

Finding the Fourth Proportional to 28,687.70, 43,031.59 and 8,966.36

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Solution

The fourth proportional to 28,687.70, 43,031.59 and 8,966.36 is: 13,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.70 : 43,031.59 = 8,966.36 : x
  2. Step 2: Convert to fraction form
    28,687.70/43,031.59 = 8,966.36/x
  3. Step 3: Cross multiply
    28,687.70x = 43,031.59 × 8,966.36
  4. Step 4: Simplify right side
    28,687.70x = 385,836,682.48
  5. Step 5: Solve for x
    x = 385,836,682.48/28,687.70
  6. Step 6: Final answer
    x = 13,449.55

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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.