Home / 20,561.55-28,360.26-14,190.55

Finding the Fourth Proportional to 20,561.55, 28,360.26 and 14,190.55

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Solution

The fourth proportional to 20,561.55, 28,360.26 and 14,190.55 is: 19,572.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.55 : 28,360.26 = 14,190.55 : x
  2. Step 2: Convert to fraction form
    20,561.55/28,360.26 = 14,190.55/x
  3. Step 3: Cross multiply
    20,561.55x = 28,360.26 × 14,190.55
  4. Step 4: Simplify right side
    20,561.55x = 402,447,687.54
  5. Step 5: Solve for x
    x = 402,447,687.54/20,561.55
  6. Step 6: Final answer
    x = 19,572.83

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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.