Home / 12,511.86-18,771.03-4,720.74

Finding the Fourth Proportional to 12,511.86, 18,771.03 and 4,720.74

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Solution

The fourth proportional to 12,511.86, 18,771.03 and 4,720.74 is: 7,082.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.86 : 18,771.03 = 4,720.74 : x
  2. Step 2: Convert to fraction form
    12,511.86/18,771.03 = 4,720.74/x
  3. Step 3: Cross multiply
    12,511.86x = 18,771.03 × 4,720.74
  4. Step 4: Simplify right side
    12,511.86x = 88,613,152.16
  5. Step 5: Solve for x
    x = 88,613,152.16/12,511.86
  6. Step 6: Final answer
    x = 7,082.33

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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.