Home / 15,776.36-21,771.04-8,703.44

Finding the Fourth Proportional to 15,776.36, 21,771.04 and 8,703.44

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Solution

The fourth proportional to 15,776.36, 21,771.04 and 8,703.44 is: 12,010.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.36 : 21,771.04 = 8,703.44 : x
  2. Step 2: Convert to fraction form
    15,776.36/21,771.04 = 8,703.44/x
  3. Step 3: Cross multiply
    15,776.36x = 21,771.04 × 8,703.44
  4. Step 4: Simplify right side
    15,776.36x = 189,482,940.38
  5. Step 5: Solve for x
    x = 189,482,940.38/15,776.36
  6. Step 6: Final answer
    x = 12,010.56

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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.