Home / 20,697.84-28,561.41-11,743.74

Finding the Fourth Proportional to 20,697.84, 28,561.41 and 11,743.74

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Solution

The fourth proportional to 20,697.84, 28,561.41 and 11,743.74 is: 16,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.84 : 28,561.41 = 11,743.74 : x
  2. Step 2: Convert to fraction form
    20,697.84/28,561.41 = 11,743.74/x
  3. Step 3: Cross multiply
    20,697.84x = 28,561.41 × 11,743.74
  4. Step 4: Simplify right side
    20,697.84x = 335,417,773.07
  5. Step 5: Solve for x
    x = 335,417,773.07/20,697.84
  6. Step 6: Final answer
    x = 16,205.45

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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.