Home / 15,253.50-21,051.63-8,540.22

Finding the Fourth Proportional to 15,253.50, 21,051.63 and 8,540.22

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Solution

The fourth proportional to 15,253.50, 21,051.63 and 8,540.22 is: 11,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,253.50 : 21,051.63 = 8,540.22 : x
  2. Step 2: Convert to fraction form
    15,253.50/21,051.63 = 8,540.22/x
  3. Step 3: Cross multiply
    15,253.50x = 21,051.63 × 8,540.22
  4. Step 4: Simplify right side
    15,253.50x = 179,785,551.56
  5. Step 5: Solve for x
    x = 179,785,551.56/15,253.50
  6. Step 6: Final answer
    x = 11,786.51

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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.