Home / 15,485.37-21,369.79-8,411.74

Finding the Fourth Proportional to 15,485.37, 21,369.79 and 8,411.74

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Solution

The fourth proportional to 15,485.37, 21,369.79 and 8,411.74 is: 11,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.37 : 21,369.79 = 8,411.74 : x
  2. Step 2: Convert to fraction form
    15,485.37/21,369.79 = 8,411.74/x
  3. Step 3: Cross multiply
    15,485.37x = 21,369.79 × 8,411.74
  4. Step 4: Simplify right side
    15,485.37x = 179,757,117.33
  5. Step 5: Solve for x
    x = 179,757,117.33/15,485.37
  6. Step 6: Final answer
    x = 11,608.19

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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.