Home / 19,629.89-29,376.79-18,813.41

Finding the Fourth Proportional to 19,629.89, 29,376.79 and 18,813.41

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Solution

The fourth proportional to 19,629.89, 29,376.79 and 18,813.41 is: 28,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,629.89 : 29,376.79 = 18,813.41 : x
  2. Step 2: Convert to fraction form
    19,629.89/29,376.79 = 18,813.41/x
  3. Step 3: Cross multiply
    19,629.89x = 29,376.79 × 18,813.41
  4. Step 4: Simplify right side
    19,629.89x = 552,677,621.16
  5. Step 5: Solve for x
    x = 552,677,621.16/19,629.89
  6. Step 6: Final answer
    x = 28,154.90

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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.