Home / 15,579.33-21,499.59-8,505.93

Finding the Fourth Proportional to 15,579.33, 21,499.59 and 8,505.93

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Solution

The fourth proportional to 15,579.33, 21,499.59 and 8,505.93 is: 11,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.33 : 21,499.59 = 8,505.93 : x
  2. Step 2: Convert to fraction form
    15,579.33/21,499.59 = 8,505.93/x
  3. Step 3: Cross multiply
    15,579.33x = 21,499.59 × 8,505.93
  4. Step 4: Simplify right side
    15,579.33x = 182,874,007.57
  5. Step 5: Solve for x
    x = 182,874,007.57/15,579.33
  6. Step 6: Final answer
    x = 11,738.25

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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.