Home / 21,553.09-32,321.57-7,509.51

Finding the Fourth Proportional to 21,553.09, 32,321.57 and 7,509.51

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Solution

The fourth proportional to 21,553.09, 32,321.57 and 7,509.51 is: 11,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.09 : 32,321.57 = 7,509.51 : x
  2. Step 2: Convert to fraction form
    21,553.09/32,321.57 = 7,509.51/x
  3. Step 3: Cross multiply
    21,553.09x = 32,321.57 × 7,509.51
  4. Step 4: Simplify right side
    21,553.09x = 242,719,115.58
  5. Step 5: Solve for x
    x = 242,719,115.58/21,553.09
  6. Step 6: Final answer
    x = 11,261.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.