Home / 10,118.10-15,171.45-7,772.28

Finding the Fourth Proportional to 10,118.10, 15,171.45 and 7,772.28

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Solution

The fourth proportional to 10,118.10, 15,171.45 and 7,772.28 is: 11,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,118.10 : 15,171.45 = 7,772.28 : x
  2. Step 2: Convert to fraction form
    10,118.10/15,171.45 = 7,772.28/x
  3. Step 3: Cross multiply
    10,118.10x = 15,171.45 × 7,772.28
  4. Step 4: Simplify right side
    10,118.10x = 117,916,757.41
  5. Step 5: Solve for x
    x = 117,916,757.41/10,118.10
  6. Step 6: Final answer
    x = 11,654.04

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1.5x scale

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.