Home / 21,153.64-29,178.34-16,670.44

Finding the Fourth Proportional to 21,153.64, 29,178.34 and 16,670.44

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Solution

The fourth proportional to 21,153.64, 29,178.34 and 16,670.44 is: 22,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.64 : 29,178.34 = 16,670.44 : x
  2. Step 2: Convert to fraction form
    21,153.64/29,178.34 = 16,670.44/x
  3. Step 3: Cross multiply
    21,153.64x = 29,178.34 × 16,670.44
  4. Step 4: Simplify right side
    21,153.64x = 486,415,766.27
  5. Step 5: Solve for x
    x = 486,415,766.27/21,153.64
  6. Step 6: Final answer
    x = 22,994.42

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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.