Home / 15,455.97-21,327.30-8,649.81

Finding the Fourth Proportional to 15,455.97, 21,327.30 and 8,649.81

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Solution

The fourth proportional to 15,455.97, 21,327.30 and 8,649.81 is: 11,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.97 : 21,327.30 = 8,649.81 : x
  2. Step 2: Convert to fraction form
    15,455.97/21,327.30 = 8,649.81/x
  3. Step 3: Cross multiply
    15,455.97x = 21,327.30 × 8,649.81
  4. Step 4: Simplify right side
    15,455.97x = 184,477,092.81
  5. Step 5: Solve for x
    x = 184,477,092.81/15,455.97
  6. Step 6: Final answer
    x = 11,935.65

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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.