Home / 21,673.64-29,909.18-12,113.69

Finding the Fourth Proportional to 21,673.64, 29,909.18 and 12,113.69

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Solution

The fourth proportional to 21,673.64, 29,909.18 and 12,113.69 is: 16,716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,673.64 : 29,909.18 = 12,113.69 : x
  2. Step 2: Convert to fraction form
    21,673.64/29,909.18 = 12,113.69/x
  3. Step 3: Cross multiply
    21,673.64x = 29,909.18 × 12,113.69
  4. Step 4: Simplify right side
    21,673.64x = 362,310,415.41
  5. Step 5: Solve for x
    x = 362,310,415.41/21,673.64
  6. Step 6: Final answer
    x = 16,716.64

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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.