Home / 21,160.84-31,619.80-16,135.60

Finding the Fourth Proportional to 21,160.84, 31,619.80 and 16,135.60

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Solution

The fourth proportional to 21,160.84, 31,619.80 and 16,135.60 is: 24,110.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.84 : 31,619.80 = 16,135.60 : x
  2. Step 2: Convert to fraction form
    21,160.84/31,619.80 = 16,135.60/x
  3. Step 3: Cross multiply
    21,160.84x = 31,619.80 × 16,135.60
  4. Step 4: Simplify right side
    21,160.84x = 510,204,444.88
  5. Step 5: Solve for x
    x = 510,204,444.88/21,160.84
  6. Step 6: Final answer
    x = 24,110.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.