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Finding the Fourth Proportional to 15,447.84, 21,327.84 and 11,904.48

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Solution

The fourth proportional to 15,447.84, 21,327.84 and 11,904.48 is: 16,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.84 : 21,327.84 = 11,904.48 : x
  2. Step 2: Convert to fraction form
    15,447.84/21,327.84 = 11,904.48/x
  3. Step 3: Cross multiply
    15,447.84x = 21,327.84 × 11,904.48
  4. Step 4: Simplify right side
    15,447.84x = 253,896,844.72
  5. Step 5: Solve for x
    x = 253,896,844.72/15,447.84
  6. Step 6: Final answer
    x = 16,435.75

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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.