Home / 15,664.41-21,616.72-8,590.89

Finding the Fourth Proportional to 15,664.41, 21,616.72 and 8,590.89

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Solution

The fourth proportional to 15,664.41, 21,616.72 and 8,590.89 is: 11,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.41 : 21,616.72 = 8,590.89 : x
  2. Step 2: Convert to fraction form
    15,664.41/21,616.72 = 8,590.89/x
  3. Step 3: Cross multiply
    15,664.41x = 21,616.72 × 8,590.89
  4. Step 4: Simplify right side
    15,664.41x = 185,706,863.68
  5. Step 5: Solve for x
    x = 185,706,863.68/15,664.41
  6. Step 6: Final answer
    x = 11,855.34

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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.