Home / 20,863.42-31,253.44-12,538.93

Finding the Fourth Proportional to 20,863.42, 31,253.44 and 12,538.93

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Solution

The fourth proportional to 20,863.42, 31,253.44 and 12,538.93 is: 18,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.42 : 31,253.44 = 12,538.93 : x
  2. Step 2: Convert to fraction form
    20,863.42/31,253.44 = 12,538.93/x
  3. Step 3: Cross multiply
    20,863.42x = 31,253.44 × 12,538.93
  4. Step 4: Simplify right side
    20,863.42x = 391,884,696.42
  5. Step 5: Solve for x
    x = 391,884,696.42/20,863.42
  6. Step 6: Final answer
    x = 18,783.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.