Home / 19,991.52-30,038.31-15,107.22

Finding the Fourth Proportional to 19,991.52, 30,038.31 and 15,107.22

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Solution

The fourth proportional to 19,991.52, 30,038.31 and 15,107.22 is: 22,699.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.52 : 30,038.31 = 15,107.22 : x
  2. Step 2: Convert to fraction form
    19,991.52/30,038.31 = 15,107.22/x
  3. Step 3: Cross multiply
    19,991.52x = 30,038.31 × 15,107.22
  4. Step 4: Simplify right side
    19,991.52x = 453,795,357.60
  5. Step 5: Solve for x
    x = 453,795,357.60/19,991.52
  6. Step 6: Final answer
    x = 22,699.39

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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.