Home / 21,353.44-29,459.28-14,268.64

Finding the Fourth Proportional to 21,353.44, 29,459.28 and 14,268.64

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Solution

The fourth proportional to 21,353.44, 29,459.28 and 14,268.64 is: 19,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.44 : 29,459.28 = 14,268.64 : x
  2. Step 2: Convert to fraction form
    21,353.44/29,459.28 = 14,268.64/x
  3. Step 3: Cross multiply
    21,353.44x = 29,459.28 × 14,268.64
  4. Step 4: Simplify right side
    21,353.44x = 420,343,860.98
  5. Step 5: Solve for x
    x = 420,343,860.98/21,353.44
  6. Step 6: Final answer
    x = 19,685.07

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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.