Home / 11,285.28-15,581.25-7,038.06

Finding the Fourth Proportional to 11,285.28, 15,581.25 and 7,038.06

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Solution

The fourth proportional to 11,285.28, 15,581.25 and 7,038.06 is: 9,717.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,285.28 : 15,581.25 = 7,038.06 : x
  2. Step 2: Convert to fraction form
    11,285.28/15,581.25 = 7,038.06/x
  3. Step 3: Cross multiply
    11,285.28x = 15,581.25 × 7,038.06
  4. Step 4: Simplify right side
    11,285.28x = 109,661,704.05
  5. Step 5: Solve for x
    x = 109,661,704.05/11,285.28
  6. Step 6: Final answer
    x = 9,717.23

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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.