Home / 20,670.42-28,524.56-11,718.74

Finding the Fourth Proportional to 20,670.42, 28,524.56 and 11,718.74

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Solution

The fourth proportional to 20,670.42, 28,524.56 and 11,718.74 is: 16,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.42 : 28,524.56 = 11,718.74 : x
  2. Step 2: Convert to fraction form
    20,670.42/28,524.56 = 11,718.74/x
  3. Step 3: Cross multiply
    20,670.42x = 28,524.56 × 11,718.74
  4. Step 4: Simplify right side
    20,670.42x = 334,271,902.25
  5. Step 5: Solve for x
    x = 334,271,902.25/20,670.42
  6. Step 6: Final answer
    x = 16,171.51

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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.