Home / 20,586.22-28,412.37-15,542.55

Finding the Fourth Proportional to 20,586.22, 28,412.37 and 15,542.55

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Solution

The fourth proportional to 20,586.22, 28,412.37 and 15,542.55 is: 21,451.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.22 : 28,412.37 = 15,542.55 : x
  2. Step 2: Convert to fraction form
    20,586.22/28,412.37 = 15,542.55/x
  3. Step 3: Cross multiply
    20,586.22x = 28,412.37 × 15,542.55
  4. Step 4: Simplify right side
    20,586.22x = 441,600,681.34
  5. Step 5: Solve for x
    x = 441,600,681.34/20,586.22
  6. Step 6: Final answer
    x = 21,451.28

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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.