Home / 20,316.23-30,446.66-12,421.50

Finding the Fourth Proportional to 20,316.23, 30,446.66 and 12,421.50

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Solution

The fourth proportional to 20,316.23, 30,446.66 and 12,421.50 is: 18,615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.23 : 30,446.66 = 12,421.50 : x
  2. Step 2: Convert to fraction form
    20,316.23/30,446.66 = 12,421.50/x
  3. Step 3: Cross multiply
    20,316.23x = 30,446.66 × 12,421.50
  4. Step 4: Simplify right side
    20,316.23x = 378,193,125.08
  5. Step 5: Solve for x
    x = 378,193,125.08/20,316.23
  6. Step 6: Final answer
    x = 18,615.32

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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.