Home / 21,123.96-29,164.86-14,675.64

Finding the Fourth Proportional to 21,123.96, 29,164.86 and 14,675.64

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Solution

The fourth proportional to 21,123.96, 29,164.86 and 14,675.64 is: 20,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.96 : 29,164.86 = 14,675.64 : x
  2. Step 2: Convert to fraction form
    21,123.96/29,164.86 = 14,675.64/x
  3. Step 3: Cross multiply
    21,123.96x = 29,164.86 × 14,675.64
  4. Step 4: Simplify right side
    21,123.96x = 428,012,986.01
  5. Step 5: Solve for x
    x = 428,012,986.01/21,123.96
  6. Step 6: Final answer
    x = 20,261.97

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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.