Home / 20,714.76-31,071.96-12,397.08

Finding the Fourth Proportional to 20,714.76, 31,071.96 and 12,397.08

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Solution

The fourth proportional to 20,714.76, 31,071.96 and 12,397.08 is: 18,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.76 : 31,071.96 = 12,397.08 : x
  2. Step 2: Convert to fraction form
    20,714.76/31,071.96 = 12,397.08/x
  3. Step 3: Cross multiply
    20,714.76x = 31,071.96 × 12,397.08
  4. Step 4: Simplify right side
    20,714.76x = 385,201,573.88
  5. Step 5: Solve for x
    x = 385,201,573.88/20,714.76
  6. Step 6: Final answer
    x = 18,595.51

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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.