Home / 14,179.54-21,123.80-13,539.84

Finding the Fourth Proportional to 14,179.54, 21,123.80 and 13,539.84

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Solution

The fourth proportional to 14,179.54, 21,123.80 and 13,539.84 is: 20,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.54 : 21,123.80 = 13,539.84 : x
  2. Step 2: Convert to fraction form
    14,179.54/21,123.80 = 13,539.84/x
  3. Step 3: Cross multiply
    14,179.54x = 21,123.80 × 13,539.84
  4. Step 4: Simplify right side
    14,179.54x = 286,012,804.49
  5. Step 5: Solve for x
    x = 286,012,804.49/14,179.54
  6. Step 6: Final answer
    x = 20,170.81

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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.