Home / 11,006.64-15,180.70-7,420.28

Finding the Fourth Proportional to 11,006.64, 15,180.70 and 7,420.28

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Solution

The fourth proportional to 11,006.64, 15,180.70 and 7,420.28 is: 10,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,006.64 : 15,180.70 = 7,420.28 : x
  2. Step 2: Convert to fraction form
    11,006.64/15,180.70 = 7,420.28/x
  3. Step 3: Cross multiply
    11,006.64x = 15,180.70 × 7,420.28
  4. Step 4: Simplify right side
    11,006.64x = 112,645,044.60
  5. Step 5: Solve for x
    x = 112,645,044.60/11,006.64
  6. Step 6: Final answer
    x = 10,234.28

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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.