Home / 28,486.35-42,731.60-10,956.20

Finding the Fourth Proportional to 28,486.35, 42,731.60 and 10,956.20

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Solution

The fourth proportional to 28,486.35, 42,731.60 and 10,956.20 is: 16,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.35 : 42,731.60 = 10,956.20 : x
  2. Step 2: Convert to fraction form
    28,486.35/42,731.60 = 10,956.20/x
  3. Step 3: Cross multiply
    28,486.35x = 42,731.60 × 10,956.20
  4. Step 4: Simplify right side
    28,486.35x = 468,175,687.48
  5. Step 5: Solve for x
    x = 468,175,687.48/28,486.35
  6. Step 6: Final answer
    x = 16,435.09

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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.