Home / 20,467.60-30,646.71-13,031.80

Finding the Fourth Proportional to 20,467.60, 30,646.71 and 13,031.80

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Solution

The fourth proportional to 20,467.60, 30,646.71 and 13,031.80 is: 19,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.60 : 30,646.71 = 13,031.80 : x
  2. Step 2: Convert to fraction form
    20,467.60/30,646.71 = 13,031.80/x
  3. Step 3: Cross multiply
    20,467.60x = 30,646.71 × 13,031.80
  4. Step 4: Simplify right side
    20,467.60x = 399,381,795.38
  5. Step 5: Solve for x
    x = 399,381,795.38/20,467.60
  6. Step 6: Final answer
    x = 19,512.88

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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.