Home / 15,664.82-21,617.03-8,590.79

Finding the Fourth Proportional to 15,664.82, 21,617.03 and 8,590.79

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Solution

The fourth proportional to 15,664.82, 21,617.03 and 8,590.79 is: 11,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.82 : 21,617.03 = 8,590.79 : x
  2. Step 2: Convert to fraction form
    15,664.82/21,617.03 = 8,590.79/x
  3. Step 3: Cross multiply
    15,664.82x = 21,617.03 × 8,590.79
  4. Step 4: Simplify right side
    15,664.82x = 185,707,440.67
  5. Step 5: Solve for x
    x = 185,707,440.67/15,664.82
  6. Step 6: Final answer
    x = 11,855.07

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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.