Home / 28,720.74-43,037.10-19,326

Finding the Fourth Proportional to 28,720.74, 43,037.10 and 19,326

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Solution

The fourth proportional to 28,720.74, 43,037.10 and 19,326 is: 28,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.74 : 43,037.10 = 19,326 : x
  2. Step 2: Convert to fraction form
    28,720.74/43,037.10 = 19,326/x
  3. Step 3: Cross multiply
    28,720.74x = 43,037.10 × 19,326
  4. Step 4: Simplify right side
    28,720.74x = 831,734,994.60
  5. Step 5: Solve for x
    x = 831,734,994.60/28,720.74
  6. Step 6: Final answer
    x = 28,959.39

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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.