Home / 14,289.96-19,728.90-11,317.80

Finding the Fourth Proportional to 14,289.96, 19,728.90 and 11,317.80

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Solution

The fourth proportional to 14,289.96, 19,728.90 and 11,317.80 is: 15,625.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.96 : 19,728.90 = 11,317.80 : x
  2. Step 2: Convert to fraction form
    14,289.96/19,728.90 = 11,317.80/x
  3. Step 3: Cross multiply
    14,289.96x = 19,728.90 × 11,317.80
  4. Step 4: Simplify right side
    14,289.96x = 223,287,744.42
  5. Step 5: Solve for x
    x = 223,287,744.42/14,289.96
  6. Step 6: Final answer
    x = 15,625.50

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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.