Home / 13,816.31-20,728.58-4,457.79

Finding the Fourth Proportional to 13,816.31, 20,728.58 and 4,457.79

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Solution

The fourth proportional to 13,816.31, 20,728.58 and 4,457.79 is: 6,688.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.31 : 20,728.58 = 4,457.79 : x
  2. Step 2: Convert to fraction form
    13,816.31/20,728.58 = 4,457.79/x
  3. Step 3: Cross multiply
    13,816.31x = 20,728.58 × 4,457.79
  4. Step 4: Simplify right side
    13,816.31x = 92,403,634.35
  5. Step 5: Solve for x
    x = 92,403,634.35/13,816.31
  6. Step 6: Final answer
    x = 6,688.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.