Home / 15,465.82-21,342.73-8,392.09

Finding the Fourth Proportional to 15,465.82, 21,342.73 and 8,392.09

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Solution

The fourth proportional to 15,465.82, 21,342.73 and 8,392.09 is: 11,581.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.82 : 21,342.73 = 8,392.09 : x
  2. Step 2: Convert to fraction form
    15,465.82/21,342.73 = 8,392.09/x
  3. Step 3: Cross multiply
    15,465.82x = 21,342.73 × 8,392.09
  4. Step 4: Simplify right side
    15,465.82x = 179,110,111.01
  5. Step 5: Solve for x
    x = 179,110,111.01/15,465.82
  6. Step 6: Final answer
    x = 11,581.03

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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.