Home / 15,662.45-21,615.57-8,590.25

Finding the Fourth Proportional to 15,662.45, 21,615.57 and 8,590.25

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Solution

The fourth proportional to 15,662.45, 21,615.57 and 8,590.25 is: 11,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.45 : 21,615.57 = 8,590.25 : x
  2. Step 2: Convert to fraction form
    15,662.45/21,615.57 = 8,590.25/x
  3. Step 3: Cross multiply
    15,662.45x = 21,615.57 × 8,590.25
  4. Step 4: Simplify right side
    15,662.45x = 185,683,204.23
  5. Step 5: Solve for x
    x = 185,683,204.23/15,662.45
  6. Step 6: Final answer
    x = 11,855.31

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Half scale
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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.