Home / 20,671.42-28,525.94-11,719.74

Finding the Fourth Proportional to 20,671.42, 28,525.94 and 11,719.74

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Solution

The fourth proportional to 20,671.42, 28,525.94 and 11,719.74 is: 16,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.42 : 28,525.94 = 11,719.74 : x
  2. Step 2: Convert to fraction form
    20,671.42/28,525.94 = 11,719.74/x
  3. Step 3: Cross multiply
    20,671.42x = 28,525.94 × 11,719.74
  4. Step 4: Simplify right side
    20,671.42x = 334,316,600.06
  5. Step 5: Solve for x
    x = 334,316,600.06/20,671.42
  6. Step 6: Final answer
    x = 16,172.89

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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.