Home / 20,571.55-28,389.01-11,496.51

Finding the Fourth Proportional to 20,571.55, 28,389.01 and 11,496.51

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Solution

The fourth proportional to 20,571.55, 28,389.01 and 11,496.51 is: 15,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.55 : 28,389.01 = 11,496.51 : x
  2. Step 2: Convert to fraction form
    20,571.55/28,389.01 = 11,496.51/x
  3. Step 3: Cross multiply
    20,571.55x = 28,389.01 × 11,496.51
  4. Step 4: Simplify right side
    20,571.55x = 326,374,537.36
  5. Step 5: Solve for x
    x = 326,374,537.36/20,571.55
  6. Step 6: Final answer
    x = 15,865.34

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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.