Home / 15,346.36-21,171.98-8,630.45

Finding the Fourth Proportional to 15,346.36, 21,171.98 and 8,630.45

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Solution

The fourth proportional to 15,346.36, 21,171.98 and 8,630.45 is: 11,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.36 : 21,171.98 = 8,630.45 : x
  2. Step 2: Convert to fraction form
    15,346.36/21,171.98 = 8,630.45/x
  3. Step 3: Cross multiply
    15,346.36x = 21,171.98 × 8,630.45
  4. Step 4: Simplify right side
    15,346.36x = 182,723,709.90
  5. Step 5: Solve for x
    x = 182,723,709.90/15,346.36
  6. Step 6: Final answer
    x = 11,906.65

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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.