Home / 21,742.43-29,994.89-14,187.02

Finding the Fourth Proportional to 21,742.43, 29,994.89 and 14,187.02

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Solution

The fourth proportional to 21,742.43, 29,994.89 and 14,187.02 is: 19,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.43 : 29,994.89 = 14,187.02 : x
  2. Step 2: Convert to fraction form
    21,742.43/29,994.89 = 14,187.02/x
  3. Step 3: Cross multiply
    21,742.43x = 29,994.89 × 14,187.02
  4. Step 4: Simplify right side
    21,742.43x = 425,537,883.42
  5. Step 5: Solve for x
    x = 425,537,883.42/21,742.43
  6. Step 6: Final answer
    x = 19,571.78

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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.