Home / 15,476.89-21,357.67-8,403.31

Finding the Fourth Proportional to 15,476.89, 21,357.67 and 8,403.31

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Solution

The fourth proportional to 15,476.89, 21,357.67 and 8,403.31 is: 11,596.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.89 : 21,357.67 = 8,403.31 : x
  2. Step 2: Convert to fraction form
    15,476.89/21,357.67 = 8,403.31/x
  3. Step 3: Cross multiply
    15,476.89x = 21,357.67 × 8,403.31
  4. Step 4: Simplify right side
    15,476.89x = 179,475,121.89
  5. Step 5: Solve for x
    x = 179,475,121.89/15,476.89
  6. Step 6: Final answer
    x = 11,596.33

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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.