Home / 15,455.94-21,330.34-8,650.64

Finding the Fourth Proportional to 15,455.94, 21,330.34 and 8,650.64

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Solution

The fourth proportional to 15,455.94, 21,330.34 and 8,650.64 is: 11,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.94 : 21,330.34 = 8,650.64 : x
  2. Step 2: Convert to fraction form
    15,455.94/21,330.34 = 8,650.64/x
  3. Step 3: Cross multiply
    15,455.94x = 21,330.34 × 8,650.64
  4. Step 4: Simplify right side
    15,455.94x = 184,521,092.42
  5. Step 5: Solve for x
    x = 184,521,092.42/15,455.94
  6. Step 6: Final answer
    x = 11,938.52

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Double scale
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Similar ratio
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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.