Home / 15,255.70-21,051.81-8,541.28

Finding the Fourth Proportional to 15,255.70, 21,051.81 and 8,541.28

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Solution

The fourth proportional to 15,255.70, 21,051.81 and 8,541.28 is: 11,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.70 : 21,051.81 = 8,541.28 : x
  2. Step 2: Convert to fraction form
    15,255.70/21,051.81 = 8,541.28/x
  3. Step 3: Cross multiply
    15,255.70x = 21,051.81 × 8,541.28
  4. Step 4: Simplify right side
    15,255.70x = 179,809,403.72
  5. Step 5: Solve for x
    x = 179,809,403.72/15,255.70
  6. Step 6: Final answer
    x = 11,786.38

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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.