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Finding the Fourth Proportional to 14,777.15, 20,399.99 and 11,412.41

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Solution

The fourth proportional to 14,777.15, 20,399.99 and 11,412.41 is: 15,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.15 : 20,399.99 = 11,412.41 : x
  2. Step 2: Convert to fraction form
    14,777.15/20,399.99 = 11,412.41/x
  3. Step 3: Cross multiply
    14,777.15x = 20,399.99 × 11,412.41
  4. Step 4: Simplify right side
    14,777.15x = 232,812,890.81
  5. Step 5: Solve for x
    x = 232,812,890.81/14,777.15
  6. Step 6: Final answer
    x = 15,754.93

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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.