Home / 15,472.63-21,352.26-8,399.05

Finding the Fourth Proportional to 15,472.63, 21,352.26 and 8,399.05

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Solution

The fourth proportional to 15,472.63, 21,352.26 and 8,399.05 is: 11,590.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.63 : 21,352.26 = 8,399.05 : x
  2. Step 2: Convert to fraction form
    15,472.63/21,352.26 = 8,399.05/x
  3. Step 3: Cross multiply
    15,472.63x = 21,352.26 × 8,399.05
  4. Step 4: Simplify right side
    15,472.63x = 179,338,699.35
  5. Step 5: Solve for x
    x = 179,338,699.35/15,472.63
  6. Step 6: Final answer
    x = 11,590.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.