Home / 15,431.52-21,295.58-8,357.96

Finding the Fourth Proportional to 15,431.52, 21,295.58 and 8,357.96

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Solution

The fourth proportional to 15,431.52, 21,295.58 and 8,357.96 is: 11,534.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.52 : 21,295.58 = 8,357.96 : x
  2. Step 2: Convert to fraction form
    15,431.52/21,295.58 = 8,357.96/x
  3. Step 3: Cross multiply
    15,431.52x = 21,295.58 × 8,357.96
  4. Step 4: Simplify right side
    15,431.52x = 177,987,605.82
  5. Step 5: Solve for x
    x = 177,987,605.82/15,431.52
  6. Step 6: Final answer
    x = 11,534.03

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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.