Home / 20,571.24-28,360.87-15,445.06

Finding the Fourth Proportional to 20,571.24, 28,360.87 and 15,445.06

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Solution

The fourth proportional to 20,571.24, 28,360.87 and 15,445.06 is: 21,293.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.24 : 28,360.87 = 15,445.06 : x
  2. Step 2: Convert to fraction form
    20,571.24/28,360.87 = 15,445.06/x
  3. Step 3: Cross multiply
    20,571.24x = 28,360.87 × 15,445.06
  4. Step 4: Simplify right side
    20,571.24x = 438,035,338.80
  5. Step 5: Solve for x
    x = 438,035,338.80/20,571.24
  6. Step 6: Final answer
    x = 21,293.58

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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.