Home / 11,128.32-16,689.24-7,253.28

Finding the Fourth Proportional to 11,128.32, 16,689.24 and 7,253.28

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Solution

The fourth proportional to 11,128.32, 16,689.24 and 7,253.28 is: 10,877.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.32 : 16,689.24 = 7,253.28 : x
  2. Step 2: Convert to fraction form
    11,128.32/16,689.24 = 7,253.28/x
  3. Step 3: Cross multiply
    11,128.32x = 16,689.24 × 7,253.28
  4. Step 4: Simplify right side
    11,128.32x = 121,051,730.71
  5. Step 5: Solve for x
    x = 121,051,730.71/11,128.32
  6. Step 6: Final answer
    x = 10,877.81

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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.