Home / 21,496.39-29,671.21-12,998.53

Finding the Fourth Proportional to 21,496.39, 29,671.21 and 12,998.53

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Solution

The fourth proportional to 21,496.39, 29,671.21 and 12,998.53 is: 17,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,496.39 : 29,671.21 = 12,998.53 : x
  2. Step 2: Convert to fraction form
    21,496.39/29,671.21 = 12,998.53/x
  3. Step 3: Cross multiply
    21,496.39x = 29,671.21 × 12,998.53
  4. Step 4: Simplify right side
    21,496.39x = 385,681,999.76
  5. Step 5: Solve for x
    x = 385,681,999.76/21,496.39
  6. Step 6: Final answer
    x = 17,941.71

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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.