Home / 19,329.68-28,945.29-12,735.88

Finding the Fourth Proportional to 19,329.68, 28,945.29 and 12,735.88

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Solution

The fourth proportional to 19,329.68, 28,945.29 and 12,735.88 is: 19,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.68 : 28,945.29 = 12,735.88 : x
  2. Step 2: Convert to fraction form
    19,329.68/28,945.29 = 12,735.88/x
  3. Step 3: Cross multiply
    19,329.68x = 28,945.29 × 12,735.88
  4. Step 4: Simplify right side
    19,329.68x = 368,643,740.01
  5. Step 5: Solve for x
    x = 368,643,740.01/19,329.68
  6. Step 6: Final answer
    x = 19,071.38

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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.