Home / 15,509.42-21,403.48-8,795.33

Finding the Fourth Proportional to 15,509.42, 21,403.48 and 8,795.33

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Solution

The fourth proportional to 15,509.42, 21,403.48 and 8,795.33 is: 12,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.42 : 21,403.48 = 8,795.33 : x
  2. Step 2: Convert to fraction form
    15,509.42/21,403.48 = 8,795.33/x
  3. Step 3: Cross multiply
    15,509.42x = 21,403.48 × 8,795.33
  4. Step 4: Simplify right side
    15,509.42x = 188,250,669.75
  5. Step 5: Solve for x
    x = 188,250,669.75/15,509.42
  6. Step 6: Final answer
    x = 12,137.83

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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.