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Finding the Fourth Proportional to 30,598.81, 45,900.41 and 12,811.57

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Solution

The fourth proportional to 30,598.81, 45,900.41 and 12,811.57 is: 19,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,598.81 : 45,900.41 = 12,811.57 : x
  2. Step 2: Convert to fraction form
    30,598.81/45,900.41 = 12,811.57/x
  3. Step 3: Cross multiply
    30,598.81x = 45,900.41 × 12,811.57
  4. Step 4: Simplify right side
    30,598.81x = 588,056,136.93
  5. Step 5: Solve for x
    x = 588,056,136.93/30,598.81
  6. Step 6: Final answer
    x = 19,218.27

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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.