Home / 15,629.96-21,567.54-8,555.72

Finding the Fourth Proportional to 15,629.96, 21,567.54 and 8,555.72

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Solution

The fourth proportional to 15,629.96, 21,567.54 and 8,555.72 is: 11,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.96 : 21,567.54 = 8,555.72 : x
  2. Step 2: Convert to fraction form
    15,629.96/21,567.54 = 8,555.72/x
  3. Step 3: Cross multiply
    15,629.96x = 21,567.54 × 8,555.72
  4. Step 4: Simplify right side
    15,629.96x = 184,525,833.33
  5. Step 5: Solve for x
    x = 184,525,833.33/15,629.96
  6. Step 6: Final answer
    x = 11,805.91

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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.