Home / 10,787.60-16,175.93-4,939.20

Finding the Fourth Proportional to 10,787.60, 16,175.93 and 4,939.20

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Solution

The fourth proportional to 10,787.60, 16,175.93 and 4,939.20 is: 7,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.60 : 16,175.93 = 4,939.20 : x
  2. Step 2: Convert to fraction form
    10,787.60/16,175.93 = 4,939.20/x
  3. Step 3: Cross multiply
    10,787.60x = 16,175.93 × 4,939.20
  4. Step 4: Simplify right side
    10,787.60x = 79,896,153.46
  5. Step 5: Solve for x
    x = 79,896,153.46/10,787.60
  6. Step 6: Final answer
    x = 7,406.30

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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.