Home / 11,285.70-15,558.04-7,918.08

Finding the Fourth Proportional to 11,285.70, 15,558.04 and 7,918.08

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Solution

The fourth proportional to 11,285.70, 15,558.04 and 7,918.08 is: 10,915.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,285.70 : 15,558.04 = 7,918.08 : x
  2. Step 2: Convert to fraction form
    11,285.70/15,558.04 = 7,918.08/x
  3. Step 3: Cross multiply
    11,285.70x = 15,558.04 × 7,918.08
  4. Step 4: Simplify right side
    11,285.70x = 123,189,785.57
  5. Step 5: Solve for x
    x = 123,189,785.57/11,285.70
  6. Step 6: Final answer
    x = 10,915.56

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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.