Home / 15,388.82-21,235.95-8,675.84

Finding the Fourth Proportional to 15,388.82, 21,235.95 and 8,675.84

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Solution

The fourth proportional to 15,388.82, 21,235.95 and 8,675.84 is: 11,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.82 : 21,235.95 = 8,675.84 : x
  2. Step 2: Convert to fraction form
    15,388.82/21,235.95 = 8,675.84/x
  3. Step 3: Cross multiply
    15,388.82x = 21,235.95 × 8,675.84
  4. Step 4: Simplify right side
    15,388.82x = 184,239,613.97
  5. Step 5: Solve for x
    x = 184,239,613.97/15,388.82
  6. Step 6: Final answer
    x = 11,972.31

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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.